A circular flat coil that has N turns, encloses an area A, and carries a current i, has its central axis parallel to a uniform m

Question

3 years ago

11

A circular flat coil that has N turns, encloses an area A, and carries a current i, has its central axis parallel to a uniform m

agnetic field B in which it is immersed. The net force on the coil is
-Zero

-NiAB

-NiB

-NiA

-iBA

Is the answer zero because the coil is placed parallel to the magnetic field?

Physics

1 answer:

Aneli [31] · Answer 1 · 2022-04-01T23:39:33+03:00

Answer:

A. Zero

Explanation:

The force on a coil of N turns, enclosing an area, A and carrying a current I in the presence of a magnetic field B, is :

F = N * I * A * B * sinθ

Where θ is the angle between the normal of the enclosed area and the magnetic field.

Since the normal of the area is parallel to the magnetic field, θ = 0

Hence:

F = NIABsin0

F = 0 or Zero