NEET PhysicsClass 12Temperature dependence of resistivityEasySingle correct

A coil of metal wire has a resistance of 20.0 Ω at 20 °C. The temperature coefficient of resistivity of the metal (taking 20 °C as the reference temperature) is 4.0 × 10⁻³ °C⁻¹. Neglecting thermal expansion of the wire, what is the resistance of the coil at 70 °C?

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A coil of metal wire has a resistance of 20.0 Ω at 20 °C. The temperature coefficient of resistivity of the metal (taking 20 °C as the reference temperature) is 4.0 × 10⁻³ °C⁻¹. Neglecting thermal expansion of the wire, what is the resistance of the coil at 70 °C?

More NEET Physics chapters

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