A 25 cm long bar magnet (AB) is moved wi

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Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Induction

Question:

A 25 cm long bar magnet (AB) is moved with a speed of 8m/s in a magnetic field of 0.02 Tesla as shown in figure. The emf generated is:

Options:

0.04 V

0.08 V

0.02 V

0.05 V

Correct Answer:

0.04 V

Explanation:

The correct answer is Option (1) → 0.04 V $n^{2}$

Using Lorentz's force,

$E=Blv$

$=0.02×\frac{25}{100}×8$

$=0.04V$