Physics

Problem

A circular loop of radius

5\,\text{cm}

carries a current of

2\,\text{A}

. Calculate the magnetic field at its centre. (

\mu_0 = 4\pi \times 10^{-7}\,\text{T m A}^{-1}

) a)

8.0 \times 10^{-6}\,\text{T}

2.5 \times 10^{-5}\,\text{T}

5.0 \times 10^{-5}\,\text{T}

1.3 \times 10^{-5}\,\text{T}