Mathematics

Problem

A straight wire

40\,\text{cm}

long placed in a uniform magnetic field of strength

0.50\,\text{T}

experiences a force of

0.80\,\text{N}

when it makes an angle of

60^\circ

with the field. Determine the current flowing through the wire. a)

6.7\,\text{A}

4.6\,\text{A}

8.0\,\text{A}

4.0\,\text{A}