Solveeit Logo
Login

Question

Question: A closely wound solenoid of 1000 turns and area of cross section 1.4 x 10-4 m2 carrying a current of...

A closely wound solenoid of 1000 turns and area of cross section 1.4 x 10-4 m2 carrying a current of 3 A is suspended through its centre allowing it to turn in a horizontal plane the magnetic moment associated with this solenoid is

A

0.22 J T-1

B

0.32 J T-1

C

0.42 JT-1

D

0.52J-1

Answer

0.42 JT-1

Explanation

Solution

: Here,

m=nIA=1000×3×1.4×10−4\mathrm { m } = \mathrm { nIA } = 1000 \times 3 \times 1.4 \times 10 ^ { - 4 }

=0.42 J T−1= 0.42 \mathrm {~J} \mathrm {~T} ^ { - 1 }