The unit of reduction factor of tangent galvanometer is
Ampere
Gauss
Radian
None of these
The time period of oscillation of a magnet in a vibration magnetometer is $1.5$ seconds. The time period of oscillation of another magnet similar in size, shape and mass but having one-fourth magnetic moment than that of first magnet, oscillating at same place will be.....$sec$
Vibration magnetometer is used for comparing
Which of the following statement is not the true
Tangent galvanometer is used to measure
Two tangent galvanometer coils of same radius connected in series. The current flowing produces deflection of $60^o$ and $45^o$. The ratio of number of turns in coil is