Question Detail

PHY 102 Test Compilation PHY 102 18 Objective Question

Question

Which of the following is/are correct about a charge q moving with velocity v in a uniform magnetic field? I. The magnitude and direction of the force F depends on v and q; II. F is independent of v and q; III. F is zero always.
Options
A I only
Correct Answer
B II only
C II and III
D I, II and III
Correct Answer

Option A is the correct answer.

Detailed Explanation

The magnetic force is F = qv×B, which clearly depends on both the charge's magnitude/sign and its velocity, so statement I alone is correct.

Hint

Look directly at the formula F = qv×B — which variables does it depend on?

Question Info