The sensitiveness of a moving coil galvanometer can be increased by decreasing the

Question

The sensitiveness of a moving coil galvanometer can be increased by decreasing the (A) number of turns in the coils (B) are of the coil (C) magnetic field (D) couple per unit twist of the suspension

Tardigrade Admin · Accepted Answer

For moving coil galvanometer Cθ =niBA where C = Couple per twist of the suspension θ = deflection of galvanometer (θ /i)=(nBA/C) Sensitivity of galvanometer =(nBA/C) ∴ To increase the sensitivity of galvanometer, value of C should be decreased.

Q. The sensitiveness of a moving coil galvanometer can be increased by decreasing the

number of turns in the coils

are of the coil

magnetic field

couple per unit twist of the suspension

For moving coil galvanometer $Cθ = ni B A$ where C = Couple per twist of the suspension $θ =$ deflection of galvanometer $\frac{θ}{i} = \frac{n B A}{C}$ Sensitivity of galvanometer $= \frac{n B A}{C}$ $∴$ To increase the sensitivity of galvanometer, value of C should be decreased.

Q. The sensitiveness of a moving coil galvanometer can be increased by decreasing the

number of turns in the coils

are of the coil

magnetic field

couple per unit twist of the suspension

For moving coil galvanometer Cθ=niBA where C = Couple per twist of the suspension θ= deflection of galvanometer iθ​=CnBA​ Sensitivity of galvanometer =CnBA​ ∴ To increase the sensitivity of galvanometer, value of C should be decreased.

For moving coil galvanometer $Cθ = ni B A$ where C = Couple per twist of the suspension $θ =$ deflection of galvanometer $\frac{θ}{i} = \frac{n B A}{C}$ Sensitivity of galvanometer $= \frac{n B A}{C}$ $∴$ To increase the sensitivity of galvanometer, value of C should be decreased.