Q11 · 2025 · Paper 1Simple familiar1 mark
QUESTION 11
Electromotive force is produced when a magnet is pushed into a solenoid. The magnitude of the electromotive force is inversely proportional to the
(A)
area of the solenoid.
(B)
strength of the magnet.
(C)
number of coils in the solenoid.
(D)
time taken for the magnet to move into the solenoid.
WORKED SOLUTION
1 markAnswer D
ANSWER
D
Worked solution
Faraday’s law gives , so for a fixed flux change the emf is inversely proportional to the time taken. Option D.
Selects option D.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.