Question
Question: A small loop lies outside a circuit. The key of the circuit is closed and opened alternately. The cl...
A small loop lies outside a circuit. The key of the circuit is closed and opened alternately. The closed loop will show
A
Clockwise pulse followed by another clockwise pulse Clockwise pulse followed by another clockwise pulse
B
Anticlockwise pulse followed by another anticlockwise pulse
C
Anticlockwise pulse followed by a clockwise pulse
D
Clockwise pulse followed by an anticlockwise pulse
Answer
Clockwise pulse followed by an anticlockwise pulse
Explanation
Solution
When key is closed dots are linked with closed loop (i.e. increases from zero to a certain value) so induced current will be clockwise when key is opened dots linked with loop decreases (from a certain value to zero) so induced current will be anticlockwise in direction.