Question

A magnetic field of (10-4$\hat{k}$)T exerts a force of (4$\hat{i}$-3$\hat{j}$)x10-12N on a particle having a charge of 10-9 C. The speed of the particle is:

• A. 40 m/s
• B. 40$\sqrt{2}$ m/s
• C. 50 m/s
• D. 50$\sqrt{3}$ m/s
• E. 100$\sqrt{2}$m/s

Answer 1

Answer: (C)

50 m/s

Answer 2

The correct answer is (C): 50 m/s