Physics

Problem

A flat coil of

N=200

turns and radius

5\,\text{cm}

carries a current of

1.5\,\text{A}

. Calculate the magnetic field at the centre of the coil. a)

7.5\,\text{mT}

0.38\,\text{mT}

3.8\,\text{mT}

1.9\,\text{mT}