Question
To change the brightness of a lamp, one student alters the number of cells in the circuit while another student uses a rheostat connected in series.
[1 mark]
Describe / Explain
Write your answer
+ More symbols (IGCSE / A-Level — all subjects)
Calculus
Functions
Greek
Relations & logic
Sets & numbers
Vectors, matrices & stats
Physics
Chemistry
Preview
Write with Apple Pencil on iPad (or finger / mouse) — the AI reads your writing and marks it.
🧭
Modelled on Cambridge 0625 · May/Jun 2025 · Paper 63 · Q3(e)(ii)
Guided Hint
— no answers, just a nudge
Thinking...
Marking your answer… please wait
🧭
Modelled on Cambridge 0625 · May/Jun 2025 · Paper 63 · Q3(e)(ii)
💬 AI coachThe full method first — then ask anything.