Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

In a hydrogen atom the electron is revolving in a circular path of radius 5.1×10–11m with a frequency 6.8×1015 Hz. The equivalent magnetic moment will be-

Options:

8.9 × 10–24 A–m2

8.9 × 10–22 A–m2

8.9 × 10–20 A–m2

8 × 10–18 A–m2

Correct Answer:

8.9 × 10–24 A–m2

Explanation:

M = iA = efπr21.6×10–19×6.8×1015×3.14×(5.1×10–11)2 = 8.9 ×10–24 A–m2