Q19 · 2025 · Paper 1Simple familiar1 mark
QUESTION 19
A magnet moves right towards a stationary coil, as shown.
The table shows possible scenarios for the direction of the induced current across the resistor and the change in the flux inside the coil as the magnet moves towards it. Which row is correct?
WORKED SOLUTION
1 markAnswer A
ANSWER
A
Worked solution
As the magnet approaches, the magnetic flux through the coil increases. Lenz’s law fixes the induced current direction so the coil opposes that increase; for the labelled circuit this corresponds to current from P to Q. Option A.
Selects option A.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.