- #1

tomwilliam

- 135

- 2

## Homework Statement

If a loop of wire starts off horizontal, in a magnetic field angled 12º from the normal to the surface of the loop, and then rotates 180º in a constant magnetic field of magnitude B, what is the magnitude of the change in magnetic flux?

## Homework Equations

Flux = A.B cos theta

## The Attempt at a Solution

The way I see it, it should start off as:

Flux = Area x B cos 12º

then rise to its peak when perpendicular to the direction of the magnetic field

Flux = Area x B cos 0º

then down to 0 when parallel,

Flux = Area x B cos 90º

then back to the starting point, hence a overall magnitude change of 0.

Is this correct?

Thanks