Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

Options:

a

b

c

d

Correct Answer:

b

Explanation:

$ B = \frac{\mu_0 nI}{2}$

n = 800

I = 1.6 

$\Rightarrow B = \frac{4\pi\times 10^{-7}\times 800 \times 1.6}{2} = 8 \times 10^{-4}T$