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In ballistic galvanometer, the frame in which the coil is wound is non-metallic to

a)

Avoid the production of induced emf

b)

Avoid the production of eddy currents

c)

Increase the production of eddy currents

d)

Increase the production of induced emf


Question ID - 150484 | Toppr Answer

In ballistic galvanometer, the frame in which the coil is wound is non-metallic to

a)

Avoid the production of induced emf

b)

Avoid the production of eddy currents

c)

Increase the production of eddy currents

d)

Increase the production of induced emf

1 Answer - 5876 Votes

3537

Answer Key : (b) -

(b)

The moving coil galvanometer have their coil wound on a metallic (copper or aluminium) frame, so as to make the motion dead beat due to the production of eddy currents. In the ballistic galvanometer, on the other hand, the damping is to be reduced to the minimum and hence the frame is of a non-conducting material  paper or bamboo.



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