Question

3. Two balls carrying charges *7 C and -5 C attract each other with a force F. If a charge - 2 pc is added to both, the force between them will be:- F (2) the (1) F (3) 2F (4) zero​

Answer 1

Answer:

The magnetic force is proportional to q and to the magnitude of the vector cross product v × B. In terms of the angle ϕ between v and B, the magnitude of the force equals qvB sin ϕ. An interesting result of the Lorentz force is the motion of a charged particle in a uniform magnetic field.