Question
Physics Question on the earth's magnetic field
Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is
A
to oscillate the coil in magnetic field for longer period of time
B
to produce large deflecting torque on the coil
C
to make the magnetic field radial
D
to bring the coil to rest quickly
Answer
to bring the coil to rest quickly
Explanation
Solution
The correct answer is(D): to bring the coil to rest quickly