Assertion: The resistivity for a substance is its resistance when it is one meter long and its area of cross-section is one square meter. |
Assertion and Reason both are correct statements and reason is the correct explanation for assertion. Assertion and Reason both are correct statements and reason is not the correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. |
Assertion and Reason both are correct statements and reason is the correct explanation for assertion. |
R α \(\frac{l}{A}\) R = ρ\(\frac{l}{A}\) ohm = ρ\(\frac{1m}{1m^2}\) ohm m = ρ |