Published by:
CGP EDU Academic Team
Published on: September 12, 2026
Two rods of same material and length have their electric resistance in ratio 1 : 2. When both rods are dipped in water, the correct statement will be
Text Solution
Verified by ExpertsThe correct answer is:
A
$R = \rho \frac{1}{A} \Rightarrow \frac{R_1}{R_2} = \frac{A_2}{A_1} \quad (\rho, L \text{ constant })$ $\Rightarrow \frac{A_1}{A_2} = \frac{R_2}{R_1} = 2$ Now, when a body dipped in water, loss of weight = $V \sigma_L g = AL \sigma_L g$ So, $\frac{\left(\text{Loss of weight}\right)_1}{\left(\text{Loss of weight}\right)_2} = \frac{A_1}{A_2} = 2$; so A has more loss of weight.
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