Mathematics

Problem

A conductor of length

0.4\,\text{m}

experiences a magnetic force of

2\,\text{N}

when it carries a current

I

in a uniform magnetic field of

0.8\,\text{T}

. The angle between the current direction and the field is

\dfrac{\pi}{6}

radians. Calculate the current

I

in the conductor. a)

6.3\,\text{A}

25\,\text{A}

12.5\,\text{A}

7.2\,\text{A}