Solveeit Logo
Login

Question

Question: A square coil of N turns (with length of each side equal L) carrying current i is placed in a unifor...

A square coil of N turns (with length of each side equal L) carrying current i is placed in a uniform magnetic field as shown in figure. What is the torque acting on the coil

A

B

C

D

Answer

Explanation

Solution

The magnetic field is and the magnetic moment

The torque is given by τ⃗=m⃗×B⃗\vec { \tau } = \vec { m } \times \vec { B }

=−iNB0L2i^×j^= - i N B _ { 0 } L ^ { 2 } \hat { i } \times \hat { j }

=−iNB0L2k^= - i N B _ { 0 } L ^ { 2 } \hat { k }