Question

A coil of area 100 cm² having 500 turns carries a current of 1 m A . It is suspended in a uniform magnetic field of induction 10^-3wb/m² . Its plane makes an angle of $60^{\circ }$ with the lines of induction. The torque acting on the coil is

• A. $250\times 10^{-8}Nm$
• B. $25\times 10^{-8}Nm$
• C. $2.5\times 10^{-8}Nm$
• D. $0.2\times 10^{-8}Nm$

Answer 1

Answer: (A)

$\tau =BAIN\cos \theta$