Practicing Success
Practicing Success
CUET Preparation Today
The resistance of a metallic wire becomes 8 times when
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length is doubled length is triped length is doubled and radius is halved length is halved and radius is doubled |
length is doubled and radius is halved |
$R= \frac{\rho l}{A} \propto \frac{l}{r^2}$ $\text{R become 8 times when length is doubled and radius is halved.}$ |
