A moving-coil galvanometer has coil of area 10 cm2 and 100 turns. It i

1.	A moving-coil galvanometer has coil of area 10 cm2 and 100 turns. It is suspended by a fibre of torque constant 10-8 N∙m/degree in a radial magnetic field of induction 0.05 Wb/m2 . Find the angle through which the coil will be deflected when a current of 16 μA passes through it.
Answer» Data ; A = 10^-3 m² , N = 100, C = 10^-8 N∙m/degree, B = 0.05 Wb/m² , 7 = 1.6 × 10^-5 A I = \(\left(\cfrac{C}{NAB}\right)\) θ ∴ The deflection of the coil, θ = \(\cfrac{NIAB}C\) = \(\cfrac{(100)(1.6\times10^{-5})(10^{-3})(0.05)}{10^{-8}}\) = 8

A moving-coil galvanometer has coil of area 10 cm2 and 100 turns. It is suspended by a fibre of torque constant 10-8 N∙m/degree in a radial magnetic field of induction 0.05 Wb/m2 . Find the angle through which the coil will be deflected when a current of 16 μA passes through it.

Answer»

Data ; A = 10^-3 m² , N = 100, C = 10^-8

N∙m/degree, B = 0.05 Wb/m² , 7 = 1.6 × 10^-5 A

I = \(\left(\cfrac{C}{NAB}\right)\) θ

∴ The deflection of the coil,

θ = \(\cfrac{NIAB}C\) = \(\cfrac{(100)(1.6\times10^{-5})(10^{-3})(0.05)}{10^{-8}}\) = 8