Is it possible for a current loop to stay without rotating in a uniform magnetic field? If yes, what should be the orientation of the loop?
Yes
Formula used: The net torque of a loop is given by
Where τ is torque
i is current
A is area vector
B is magnetic field
θ is the angle between the area vector and magnetic field
When θ=0,
When θ=180,
If θ is zero or 180° (integral multiple of π) then torque will be zero. So coil will stop its rotation. θ=nπ represents that the magnetic field is in parallel with area vector. So the loop can stay in a uniform magnetic field without rotation.