The resistivity, P, of a material of length l, cross-sectional area A, resistance R, is given by the equation?

A. P=R/Al

B. P=l/RA

C. P=Rl/A

D. P=R/Al

Correct Answer: Option A

**A. P=R/Al**

The resistivity, P, of a material of length l, cross-sectional area A, resistance R, is given by the equation?

A. P=R/Al

B. P=l/RA

C. P=Rl/A

D. P=R/Al

Correct Answer: Option A

**A. P=R/Al**

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