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Question
Physics
Metals have
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Q. Metals have
J & K CET
J & K CET 2008
Current Electricity
A
zero resistivity
16%
B
high resistivity
25%
C
low resistivity
54%
D
infinite resistivity
5%
Solution:
Resistivity $\rho=\frac{R A}{l}$
$\Rightarrow \rho \propto R$
$\because$ Metals have low resistance, therefore they have low resistivity.