Explain why R R 0 (1 T) for the temperature variation of the resistance R of an object is not as accurate as 0 (1 T), which gives the temperature variation of resistivity ...

The formula R R0 1 T is a simplified approximation for the temperature variation of resistance R based on the linear expansion coefficient It assumes ...

Explain why R = R 0 (1 + T) for the temperature variation of the resistance R

Question:

Explain why R = R₀ (1 + αΔT) for the temperature variation of the resistance R of an object is not as accurate as ρ = ρ₀(1 + αΔT), which gives the temperature variation of resistivity ρ.

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