A bar magnet of the moment overset arrow M= hati+ hatj is placed in a magnetic field induction overset arrow B=3 hati+4 hatj+4 hatk . The torque acting on the magnet is

Question

A bar magnet of the moment overset arrow M= hati+ hatj is placed in a magnetic field induction overset arrow B=3 hati+4 hatj+4 hatk . The torque acting on the magnet is (A) 4 hati-4 hatj+ hatk (B)  hati+ hatk (C)  hati- hatj (D)  hati+ hatj+ hatk

Tardigrade Admin · Accepted Answer

When bar magnet is palced in external magnetic field it experiences torque. overset arrow τ= overset arrow M× overset arrow B overset arrow τ= 4 hati-4 hatj+ hatk

Q. A bar magnet of the moment $M \to = \hat{i} + \hat{j}$ is placed in a magnetic field induction $B \to = 3 \hat{i} + 4 \hat{j} + 4 \hat{k}$ . The torque acting on the magnet is

$4 \hat{i} - 4 \hat{j} + \hat{k}$

$\hat{i} + \hat{k}$

$\hat{i} - \hat{j}$

$\hat{i} + \hat{j} + \hat{k}$

When bar magnet is palced in external magnetic field it experiences torque.
$τ \to = M \to \times B \to$
$τ \to =$ $4 \hat{i} - 4 \hat{j} + \hat{k}$

Q. A bar magnet of the moment M→=i^+j^​ is placed in a magnetic field induction B→=3i^+4j^​+4k^ . The torque acting on the magnet is

4i^−4j^​+k^

i^+k^

i^−j^​

i^+j^​+k^