Two coils C(1) and C(2) are kept coaxial...

Two coils `C_(1)` and `C_(2)` are kept coaxially as shown the coil `C_(1)` is connected to a battery and the coil `C_(2)` is connected to a galvanometer. The deflection in galvanometer can be increased by

A

inserting a soft iron rod in coil `C_1`

B

increasing relative speed between coils.

C

connecting powerful battery to the coil `C_1`

D

all the above

Text Solution

Verified by Experts

The correct Answer is:

D

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