Question

Two beams of protons moving parallel in same direction will :

• A. Repel each other
• B. Exert no force
• C. Attract each other
• D. Deflect perpendicular to the plane of the beams

Answer 1

The correct option is A Repel each other

Although moving beams of protons are like currents and two parallel currents should attract each other. But the electrostatic force will dominate over the magnetic force and hence they will repel each other.