Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

Options:

a

b

c

d

Correct Answer:

c

Explanation:

$\text{For weight to be balanced by magnetic force mg = ilB}$

$\Rightarrow B = \frac{mg}{iL}= 4.9 \times 10^{-5} T$