Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

A particle of mass 0.5 g and charge 2.5×10−8 C is moving with velocity 6×104m/s. What should be the minimum value of magnetic field acting on it, so that the particle is able to move in a straight line ? (take g = 9.8m/s2)

Options:
0.327 Weber/m2
 
3.27 Weber/m2

32.7 Weber/m2

none of these

Correct Answer:
3.27 Weber/m2
Explanation:

Use : mg = qvB

B = 3.27 Weber/m2