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
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 | SaraNextGen Top 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
|
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 |
|
(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.