Class 12 NEET Physics Magnetism and Matter Questions

When a current loop is placed in a magnetic field it experiences a torque. It is given by

→

τ

=

→

M

×

→

B

Where

→

M

is the magnetic moment of the loop and

→

B

is the magnetic field.
or τ=MBsinθ where θ is angle between

→

M

and

→

B

When

→

M

and

→

B

are parallel (i.e. θ = 0°) the equilibrium is stable and when they are antiparallel (i.e. θ=π) the equilibrium is unstable.