Physics

Problem

0.30\,\text{m}

long wire lies in a magnetic field of

0.20\,\text{T}

such that it makes an angle of

30^{\circ}

with the field. If the wire experiences a force of

0.12\,\text{N}

, what is the current in the wire? a)

2\,\text{A}

8\,\text{A}

4\,\text{A}

1.2\,\text{A}