Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

An electron is moving at a velocity of $3.2 × 10^7 m/s$ in a magnetic field along a circular path of radius 20 cm. The magnitude of the magnetic field applied is (approximately)

Options:

$6 × 10^{-4} T$

$8.43 × 10^{-5} T$

$9 × 10^{-4} T$

$9 × 10^{-5} T$

Correct Answer:

$9 × 10^{-4} T$

Explanation:

The correct answer is Option (3) → $9 × 10^{-4} T$