NEET Physics Wheatstone Bridge MCQ Question with Solution

Consider a rectangular slab of length $l$ and area of cross-section $A$ . Which relation correctly defines the resistance $R$ of the slab?

A

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

B

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

C

R = $\rho A l$

D

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

Correct Answer

Option A

Detailed Explanation

According to the relation $R = \frac{\rho l}{A}$ , resistance is directly proportional to length $l$ and inversely proportional to area $A$ .

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