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प्रश्न
The resistance of a wire of length 100 cm and of uniform area of cross-section 0.020 cm2, is found to be 2.0 ohm. Calculate the sp. resistance of the wire.
संख्यात्मक
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उत्तर
l = 100 cm; a = 0.020 cm2; R = 2.0 Ω
\[ \text{Sp. resistance, } \rho = \frac{Ra}{l}\]
\[ = \frac{2.0 \times 0.020}{100} \]
\[ = 0.0004 \ \Omega \text{cm}\]
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