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>>Torque on a Rectangular Current Loop and Problems on it
>> $A rectangular loop carrying a current i$

Question

A rectangular loop carrying a current $i$ is placed in a uniform magnetic field $B$ . The area enclosed by the loop is $A$ . If there are $n$ turns in the loop, the torque acting on the loop is given by

A

$n i (\overset{ˉ}{A} \times \overset{ˉ}{B})$

B

$n i (\overset{ˉ}{A} . \overset{ˉ}{B})$

C

$\frac{i ( A ˉ \times B ˉ )}{n}$

D

$\frac{i ( A ˉ . B ˉ )}{n}$

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Updated on : 2022-09-05

Solution

Verified by Toppr

Correct option is A)

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

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