Question.
On what factors does the resistance of a conductor depend ?
On what factors does the resistance of a conductor depend ?
solution:
The resistance $(R)$ of a conductor depends upon
(1) Its length $(\ell): \mathrm{R} \propto \ell$
(2) Its cross-sectional area (A): $R \propto \frac{1}{A}$
(3) Nature of material i.e., resistivity $(\rho)$ of its material: $R \propto \rho$
(4) Temperature: more the temperature, more will be its resistance.
The resistance $(R)$ of a conductor depends upon
(1) Its length $(\ell): \mathrm{R} \propto \ell$
(2) Its cross-sectional area (A): $R \propto \frac{1}{A}$
(3) Nature of material i.e., resistivity $(\rho)$ of its material: $R \propto \rho$
(4) Temperature: more the temperature, more will be its resistance.
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