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A "bar" magnet of moment bar(M)=hat(i)+h...

A "bar" magnet of moment `bar(M)=hat(i)+hat(j)` is placed in a magnetic field induction `vec(B)=3hat(i)+4hat(j)+4hat(k)`.
The torque acting on the magnet is

A

`4hat(i)-4 hat(j)+hat(k)`

B

`hat(i)+hat(k)`

C

`hat(i)-hat(j)`

D

`hat(i)+hat(j)+hat(k)`

Text Solution

Verified by Experts

The correct Answer is:
A
`vec(tau)=vec(M)xxvec(B)`
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