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.
KS3 Year 7 / Physics / Curriculum
Electricity, magnetism and space: structured theory, worked examples, answered practice, and a mastery checklist for KS3 Year 7.
Unit
The essential chapter ideas in a clear sequence before practice.
Charge is a property, current is charge flow rate, and potential difference is energy per unit charge. Keep these definitions distinct.
Draw a closed circuit with correct symbols. Apply charge conservation at junctions and energy conservation around loops where required.
Field lines indicate direction and relative strength. In induction, changing magnetic flux is linked to induced potential difference.
Physics
Follow the method step by step and check why every step is valid.
A 5 Ω resistor is connected across 15 V. Find current and power.
Physics
Link each topic to equations, units, data handling, and required practical thinking.
The structure follows the official textbook layout and is used to organise study.
I = 3 A, P = 45 W
Before calculating, explain the key idea from “Circuit symbols” and which conditions must be checked.
The answer should show not only which rule is used for “Circuit symbols”, but also why it is valid here.
Electricity, magnetism and space
Try independently, use the hint if needed, then open the answer guide.
1. Explain the idea and give one correct foundation example for “Circuit symbols”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Circuit symbols” to a physical law or model, correct units, and an interpretation.
2. Solve an application and show every intermediate step for “Series circuits”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Series circuits” to a physical law or model, correct units, and an interpretation.
3. Compare a correct and an incorrect approach and justify the difference for “Cells and bulbs”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Cells and bulbs” to a physical law or model, correct units, and an interpretation.
4. Create a short exam-style question and check your answer for “Current introduction”.
Write known quantities in SI units, draw a diagram where useful, and state the law before substitution.
A complete answer links “Current introduction” to a physical law or model, correct units, and an interpretation.
The areas that usually create mistakes or need extra revision.
Where to start: textbook, daily material, PDFs, videos, and worked examples.
Targeted practice before full tests so coverage is clear.
How to measure progress in this chapter and when it enters a cumulative mock.
What to do after finishing the chapter and how it connects to the next unit.
Note: for the official examinable syllabus of each school year, always confirm with the school, tutor, and current Ministry/IEP announcements.