Physics

Problem

The magnitude of the force

F

acting on a fixed current-carrying wire varies sinusoidally with the angle

\theta

between the wire and the magnetic field. The curve passes through

F = 0\,\text{N}

\theta = 0°,\;180°\text{ and }360°

and reaches a peak value of

6\,\text{N}

\theta = 90°

. What is the expected magnitude of the force at

\theta = 150°

? a)

5.2\,\text{N}

3\,\text{N}

4\,\text{N}

6\,\text{N}