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A unifrom magntic field of 0.3 T is...

A unifrom magntic field of 0.3 T is established along the positive Z- direction .A rectangular loop in XY - plane of sides 10 cm and 5 cm carries a current of `I = 12A ` as shown . The torque on the loop is
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A

`+1. xx 10 ^(-2) hati N.m`

B

`-1.8 xx 10^(-2) hatj N.m`

C

zero

D

`-1.8 xx 10 ^(-2) hati N.m`

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