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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

`4hati - 4hatj + hatk`

B

`hati + hatk`

C

`hati - hatj`

D

`hati + hatj + hatk`

Text Solution

Verified by Experts

The correct Answer is:
A
`vectau = vecM xx vecB`
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