Physics

Problem

A pair of parallel conducting rails are

0.40\,\text{m}

apart and connected through a

2.0\,\Omega

resistor at one end. A conducting rod slides on the rails with a constant speed of

3.0\,\text{m\,s}^{-1}

perpendicular to a uniform magnetic field of magnitude

0.20\,\text{T}

directed into the plane of the rails. Neglect the resistance of the rod and rails. Calculate the magnitude of the current in the circuit. a)

0.24\,\text{A}

0.08\,\text{A}

0.12\,\text{A}

0.06\,\text{A}