Question

A coil of area 100 cm having 500 turns carries a current of 1 m A . It is suspended in a uniform magnetic field of induction 10wb/m . 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)

$250 \times 10^{-8}\,Nm$

Answer 2

$\tau=BAIN\,\cos\,\theta$