Physics

Problem

Two long parallel wires

A

and

B

are

0.40\,\text{m}

apart and carry currents of

20\,\text{A}

and

30\,\text{A}

respectively in opposite directions. Along the line joining the wires, measured from wire

A

, at what distance from

A

is the net magnetic field zero? a)

0.24\,\text{m}

0.80\,\text{m}

0.16\,\text{m}

0.08\,\text{m}