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When the switch S is closed in the figure given below, the pointer of the galvanometer moves to the right. If S is kept closed, will the pointer: a) return to zero? b) stay over on the right? c) move to the left and stay there d) move to and fro until S is opened
When the switch S is closed in the figure given below, the pointer of the galvanometer moves to the right. If S is kept closed, will the pointer: a) return to zero? b) stay over on the right? c) move to the left and stay there d) move to and fro until S is opened
CBSE | Class 10 | Lakhmir Singh | Magnetic Effects of Electric Current | Physics
When the switch S is closed in the figure given below, the pointer of the galvanometer moves to the right. If S is kept closed, will the pointer: a) return to zero? b) stay over on the right? c) move to the left and stay there d) move to and fro until S is opened

Answer:

The correct option is a) return to zero

Explanation:

When the switch S is closed, the galvanometer’s pointer moves to the right. If S is closed, the magnetic field becomes constant, meaning that there is no relative change in the magnetic field. So the circuit has no induced current.

 

i

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