Mathematics

Problem

An overhead crane uses a

1.5\,\text{m}

long conductor placed perpendicular to a uniform magnetic field of

0.20\,\text{T}

. To produce a lifting force of

30\,\text{N}

, what minimum current must flow through the conductor? a)

150\,\text{A}

100\,\text{A}

50\,\text{A}

200\,\text{A}