Question Detail

PHY 102 Electromagnetic Induction 2 Objective Question

Question

When a magnet is moved 'towards' a coil, what is the initial response of a galvanometer connected to the coil?
Options
A It deflects in one direction and stays there
B It deflects in one direction and returns to zero when the magnet stops
Correct Answer
C It deflects in the opposite direction
D It shows no deflection at all
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 5 clarifies: 'When the magnet shown below is moved 'towards' the coil, the pointer or needle of the Galvanometer (...) will deflect away from its centre position in one direction only. When the magnet stops moving and is held stationary (...) the needle of the galvanometer returns back to zero as there is no physical movement of the magnetic field.'

Hint

The deflection occurs only when there is relative motion.

Question Info