A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is

Question

A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is (A) N A2 B2 I (B) NABI 2 (C) N2 A B I (D) N A B I

Tardigrade Admin · Accepted Answer

τ=M B sin θ ⇒ τ max =N i A B, [θ=90°]

Q. A moving coil galvanometer has $N$ number of turns in a coil of effective area $A$ , it carries a current $I$ . The magnetic field $B$ is radial. The torque acting on the coil is

$N A^{2} B^{2} I$

$N A B I^{2}$

$N^{2} A B I$

$N A B I$

$τ = MB sin θ \Rightarrow τ_{m a x} = N i A B, [θ = 9 0^{\circ}]$

Q. A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is

NA2B2I

NABI2

N2ABI

NABI