Questions
The pointer of a dead-beat galvanometer gives a steady deflection because
a
Eddy currents are produced in the conducting frame over which the coil is wound
b
Its magnet is very strong
c
Its pointer is very light
d
Its frame is made of abonite
detailed solution
Correct option is A
In a dead beat galvanometer, the coil is wound on a metallic frame such that when the current flows through the conductor, as the pointer moves through a changing magnetic field, an eddy current in induced in the metallic frame which opposes the motion of the pointer beyond the mean value, hence dampens the motion very quickly.Talk to our academic expert!
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