KS3 Year 9 / Physics / Curriculum

Electricity and magnetism

Electricity and magnetism: structured theory, worked examples, answered practice, and a mastery checklist for KS3 Year 9.

Цілі навчання

Describe “Current, potential difference and resistance” using evidence from observation, measurement, or a model.
Describe “Series and parallel circuits” using evidence from observation, measurement, or a model.
Describe “I-V characteristics introduction” using evidence from observation, measurement, or a model.
Describe “Static electricity” using evidence from observation, measurement, or a model.
Describe “Electric fields in simple form” using evidence from observation, measurement, or a model.

Ключові ідеї та перевірки

I draw and analyse a circuit with correct instruments.
I connect charge, current, voltage, resistance, and power.
Every solution or explanation for “Electricity and magnetism” should include a method, justification, and final check.

Розділ

Основна теорія

Ключові ідеї глави у зрозумілій послідовності перед практикою.

Charge, current, and potential difference

Charge is a property, current is charge flow rate, and potential difference is energy per unit charge. Keep these definitions distinct.

Circuit and conservation

Draw a closed circuit with correct symbols. Apply charge conservation at junctions and energy conservation around loops where required.

Fields and induction

Field lines indicate direction and relative strength. In induction, changing magnetic flux is linked to induced potential difference.

Current, potential difference and resistance

For “Current, potential difference and resistance”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.

Series and parallel circuits

For “Series and parallel circuits”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.

I-V characteristics introduction

For “I-V characteristics introduction”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.

Static electricity

For “Static electricity”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.

Electric fields in simple form

For “Electric fields in simple form”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.

Physics

Розв'язані приклади

Дотримуйтесь методу крок за кроком і перевіряйте обґрунтування.

Worked circuit example

A 7 Ω resistor is connected across 35 V. Find current and power.

1Ohm's law: I = V/R = 35/7.
2Power: P = VI = 35 · 5.
3Check A and W units and that the circuit is closed.

I = 5 A, P = 175 W

Reasoning example

Before calculating, explain the key idea from “Current, potential difference and resistance” and which conditions must be checked.

1Define the idea in one clear sentence.
2Connect it to a representation, law, or formula.
3State a restriction, unit, or final check that makes the solution valid.

The answer should show not only which rule is used for “Current, potential difference and resistance”, but also why it is valid here.

Electricity and magnetism

Практика з відповідями

Вісім завдань від базових навичок до екзаменаційного рівня. Спочатку виконайте самостійно.

Базова навичка4 хвилин

A 6 Ω resistor carries 5 A. Find voltage and power.

Підказка

V=IR and P=VI.

Відповідь

V=30 V, P=150 W.

Базова навичка5 хвилин

Structure a solution for “Series and parallel circuits”: givens, SI units, law, substitution, and interpretation.

Підказка

State the law before substituting numbers.

Відповідь

A full solution states symbols/units, selects a valid law for “Series and parallel circuits”, shows substitution and calculation, and interprets the result.

Застосування6 хвилин

Identify three uncertainty sources in measuring “I-V characteristics introduction” and improve each one.

Підказка

Consider instrument resolution, reaction time, repeats, and controls.

Відповідь

A full response links each specific error source to a targeted improvement and identifies random or systematic impact.

Застосування7 хвилин

Plan a suitable graph for “Static electricity” data and explain how to obtain a gradient or relationship.

Підказка

Put the independent variable on x and dependent variable on y.

Відповідь

A full response labels axes/units, uses a suitable scale and best fit; gradient uses a large triangle and is interpreted with units.

Обґрунтування8 хвилин

Check whether a result for “Electric fields in simple form” is sensible using units, order of magnitude, and a limiting case.

Підказка

A check should not merely repeat the same calculation.

Відповідь

A full check confirms dimensions/units, compares expected magnitude, and tests behaviour when one variable becomes very small or large.

Обґрунтування9 хвилин

Connect “Electromagnets” to energy conservation or a force/field model and justify the choice.

Підказка

Define the system and interactions.

Відповідь

A full response defines the system, describes transfer or interaction, applies the appropriate model, and states losses or limitations.

Екзаменаційний10 хвилин

Write a multi-step exam response about “Motor effect introduction” with calculation and evaluation.

Підказка

Separate givens, model, calculation, result, and evaluation.

Відповідь

A full response includes an appropriate diagram/model, laws, algebraic rearrangement, SI substitution, suitably precise result, and evaluation of assumptions.

Екзаменаційний12 хвилин

Compare two methods for investigating “Generator effect introduction” and select the more reliable using criteria.

Підказка

Use accuracy, repeatability, control, and safety.

Відповідь

The choice must use at least three comparable criteria and acknowledge one trade-off or limitation.

Типові помилки

Connecting an ammeter in parallel or a voltmeter in series.
Confusing current with voltage or saying current is consumed.
Ignoring direction in force, field, or induction.

Перевірка розуміння

I draw and analyse a circuit with correct instruments.
I connect charge, current, voltage, resistance, and power.
I interpret fields and induction with direction.

Electricity and magnetism

Домашня робота до розділу

Шість різних завдань від базового рівня до складного з часом, підказками та відповідями.

Базовий8 хвилин

Homework 1: A 2 Ω resistor carries 8 A. Find voltage and power.

Підказка

V=IR and P=VI.

Відповідь

V=16 V, P=128 W.

Базовий10 хвилин

Homework 2: Structure a solution for “Series and parallel circuits”: givens, SI units, law, substitution, and interpretation.

Підказка

State the law before substituting numbers.

Відповідь

A full solution states symbols/units, selects a valid law for “Series and parallel circuits”, shows substitution and calculation, and interprets the result.

Поглиблений12 хвилин

Homework 3: Identify three uncertainty sources in measuring “I-V characteristics introduction” and improve each one.

Підказка

Consider instrument resolution, reaction time, repeats, and controls.

Відповідь

A full response links each specific error source to a targeted improvement and identifies random or systematic impact.

Поглиблений15 хвилин

Homework 4: Plan a suitable graph for “Static electricity” data and explain how to obtain a gradient or relationship.

Підказка

Put the independent variable on x and dependent variable on y.

Відповідь

A full response labels axes/units, uses a suitable scale and best fit; gradient uses a large triangle and is interpreted with units.

Складний18 хвилин

Homework 5: Check whether a result for “Electric fields in simple form” is sensible using units, order of magnitude, and a limiting case.

Підказка

A check should not merely repeat the same calculation.

Відповідь

A full check confirms dimensions/units, compares expected magnitude, and tests behaviour when one variable becomes very small or large.

Складний20 хвилин

Homework 6: Connect “Electromagnets” to energy conservation or a force/field model and justify the choice.

Підказка

Define the system and interactions.

Відповідь

A full response defines the system, describes transfer or interaction, applies the appropriate model, and states losses or limitations.

50 хвилин / 40 балів

Повний тест розділу

Повний тест із таймером, балами та зразками відповідей.

Start the timer when ready, work without notes, show every step, and open model answers only after finishing.

1. A 2 Ω resistor carries 6 A. Find voltage and power.

2 балів

Відповідь

V=12 V, P=72 W.

2. Structure a solution for “Series and parallel circuits”: givens, SI units, law, substitution, and interpretation.

3 балів

Відповідь

A full solution states symbols/units, selects a valid law for “Series and parallel circuits”, shows substitution and calculation, and interprets the result.

3. Identify three uncertainty sources in measuring “I-V characteristics introduction” and improve each one.

3 балів

Відповідь

A full response links each specific error source to a targeted improvement and identifies random or systematic impact.

4. Plan a suitable graph for “Static electricity” data and explain how to obtain a gradient or relationship.

4 балів

Відповідь

A full response labels axes/units, uses a suitable scale and best fit; gradient uses a large triangle and is interpreted with units.

5. Check whether a result for “Electric fields in simple form” is sensible using units, order of magnitude, and a limiting case.

4 балів

Відповідь

A full check confirms dimensions/units, compares expected magnitude, and tests behaviour when one variable becomes very small or large.

6. Connect “Electromagnets” to energy conservation or a force/field model and justify the choice.

4 балів

Відповідь

A full response defines the system, describes transfer or interaction, applies the appropriate model, and states losses or limitations.

7. Write a multi-step exam response about “Motor effect introduction” with calculation and evaluation.

5 балів

Відповідь

A full response includes an appropriate diagram/model, laws, algebraic rearrangement, SI substitution, suitably precise result, and evaluation of assumptions.

8. Compare two methods for investigating “Generator effect introduction” and select the more reliable using criteria.

5 балів

Відповідь

The choice must use at least three comparable criteria and acknowledge one trade-off or limitation.

9. Create an extension question about “Current, potential difference and resistance”, a prediction, and a data-collection plan.

5 балів

Відповідь

A full response gives a testable question, justified prediction, independent-variable range, repeats, and an analysis method.

10. A 5 Ω resistor carries 5 A. Find voltage and power.

5 балів

Відповідь

V=25 V, P=125 W.

Розділ

Офіційні джерела

Джерела програми; порядок тем уточнюйте у школі та викладача.

UK Department for Education - ScienceOfficial national curriculum progression and attainment guidance.

Physics

KS3 Year 9: структурований маршрут з математики та фізики з розділами, практикою і наступними кроками.

Назад до предмета

Що покриває глава

Структура відповідає підручнику й допомагає організувати вивчення теми.

Current, potential difference and resistance

Series and parallel circuits

I-V characteristics introduction

Static electricity

Electric fields in simple form

Electromagnets

Motor effect introduction

Generator effect introduction

На чому сфокусуватися

Теми, де найчастіше виникають помилки або потрібна додаткова практика.

I draw and analyse a circuit with correct instruments.

I connect charge, current, voltage, resistance, and power.

I interpret fields and induction with direction.

Джерела, щоденні матеріали та ресурси

З чого почати: підручник, daily material, PDFs, videos і worked examples.

Start from the official textbook or specification referenced on the subject page.

Use the notes and examples as support, not as a replacement for the official syllabus.

Check the current syllabus version before exam preparation.

Практика за підтемами

Цільова практика перед full tests, щоб coverage було зрозумілим.

A 6 Ω resistor carries 5 A. Find voltage and power.

Structure a solution for “Series and parallel circuits”: givens, SI units, law, substitution, and interpretation.

Identify three uncertainty sources in measuring “I-V characteristics introduction” and improve each one.

Plan a suitable graph for “Static electricity” data and explain how to obtain a gradient or relationship.

Check whether a result for “Electric fields in simple form” is sensible using units, order of magnitude, and a limiting case.

Connect “Electromagnets” to energy conservation or a force/field model and justify the choice.

Write a multi-step exam response about “Motor effect introduction” with calculation and evaluation.

Compare two methods for investigating “Generator effect introduction” and select the more reliable using criteria.

Mocks і перевірка прогресу

Як вимірювати прогрес у главі і коли додавати її до загального mock.

Start with untimed practice by subtopic.

Move to a short timed checkpoint only after completing the mastery checklist.

Record each error with the correct method and revisit it after 48 hours.

Наступний крок

Що робити після глави і як вона пов'язана з наступним розділом.

Complete the practice without support.

Explain the core method aloud in under two minutes.

Continue to the next chapter or request targeted tutor support.

Примітка: офіційну екзаменаційну програму кожного року завжди уточнюйте у школі, викладача та за поточними офіційними джерелами.

Цілі навчання

Describe “Current, potential difference and resistance” using evidence from observation, measurement, or a model.

Describe “Series and parallel circuits” using evidence from observation, measurement, or a model.

Describe “I-V characteristics introduction” using evidence from observation, measurement, or a model.

Describe “Static electricity” using evidence from observation, measurement, or a model.

Describe “Electric fields in simple form” using evidence from observation, measurement, or a model.

Що покриває глава

Структура відповідає підручнику й допомагає організувати вивчення теми.

Current, potential difference and resistance

Series and parallel circuits

I-V characteristics introduction

Static electricity

Electric fields in simple form

Electromagnets

Motor effect introduction

Generator effect introduction

Джерела, щоденні матеріали та ресурси

З чого почати: підручник, daily material, PDFs, videos і worked examples.

Start from the official textbook or specification referenced on the subject page.

Use the notes and examples as support, not as a replacement for the official syllabus.

Check the current syllabus version before exam preparation.

Практика за підтемами

Цільова практика перед full tests, щоб coverage було зрозумілим.

A 6 Ω resistor carries 5 A. Find voltage and power.

Structure a solution for “Series and parallel circuits”: givens, SI units, law, substitution, and interpretation.

Identify three uncertainty sources in measuring “I-V characteristics introduction” and improve each one.

Plan a suitable graph for “Static electricity” data and explain how to obtain a gradient or relationship.

Check whether a result for “Electric fields in simple form” is sensible using units, order of magnitude, and a limiting case.

Connect “Electromagnets” to energy conservation or a force/field model and justify the choice.

Write a multi-step exam response about “Motor effect introduction” with calculation and evaluation.

Compare two methods for investigating “Generator effect introduction” and select the more reliable using criteria.

Mocks і перевірка прогресу

Як вимірювати прогрес у главі і коли додавати її до загального mock.

Start with untimed practice by subtopic.

Move to a short timed checkpoint only after completing the mastery checklist.

Record each error with the correct method and revisit it after 48 hours.