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>>Torque on a Rectangular Current Loop and Problems on it
>> $When a current carrying coil is placed i$

Question

When a current carrying coil is placed in a uniform magnetic field of induction $B$ , then a torque $τ$ acts on it. If $I$ is the current, $n$ is the number of turns and $A$ is the face area of the coil and the normal to the coil makes an angle $θ$ with $B$ , Then

A

$τ = B I n A$

B

$τ = B I n A sin θ$

C

$τ = B I n A cos θ$

D

$τ = B I n A tan θ$

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Updated on : 2022-09-05

Solution

Verified by Toppr

Correct option is B)

$τ = M \times B$
$τ = M B sin θ$
$= n i A B sin θ$ $(∵ M = n i A)$

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