What should be the angle between the mag...

What should be the angle between the magnetic dipole moment of the current carrying coil and the magnetic field, for the coil to be in stable equilibrium?

A

Zero

B

`45 ^(@)`

C

`90^(@)`

D

`180^(@)`

Verified by Experts

The correct Answer is:

A

`vec tau = vec p _(m) xx vec B,` gor stable equilibrium, `vec tau = 0`
`therefore ` angle between `vec p _(m) and vec B is 0^(@).`

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