Two long, parallel conductors are apart and carry currents of and in the same…

PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current

Problem

Two long, parallel conductors are

4.0\,\text{cm}

apart and carry currents of

20\,\text{A}

and

30\,\text{A}

in the same direction. What is the magnitude of the net magnetic field at a point midway between the wires?

\left(\mu_0=4\pi\times10^{-7}\,\text{H}\,\text{m}^{-1}\right)

(a)

5\times10^{-4}\,\text{T}

(b)

5\times10^{-5}\,\text{T}

(c)

1\times10^{-4}\,\text{T}

(d)

2.5\times10^{-4}\,\text{T}