Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

Options:

a

b

c

d

Correct Answer:

b

Explanation:

$R = \frac{\rho l}{A}$

$ A = \frac{\rho l}{R} = \frac{1.7\times 10^{-8}\times 0.5}{2} = \pi r^2$

$\Rightarrow r = 0.0367mm$