A 50 cm long aluminium rod rests on two parallel rails that are 35 cm apart
PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A 50 cm long aluminium rod rests on two parallel rails that are 35 cm apart. The region between the rails is filled with a uniform magnetic field of 0.30 T directed vertically downwards. A current of 7 A flows along the rod from left to right. At a particular instant only 28 cm of the rod is actually between the rails and inside the magnetic field. The rod is perpendicular to the field. Determine the magnitude of the magnetic force on the rod at that instant.