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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityEquivalent ResistanceMedium2 minPYQ_2020

PhysicsMediumsingle choice

Which of the following graph represents the variation of resistivity $(ρ)$ with temperature $(T)$ for copper?NEET 2020 (Phase 1)

Options:

Answer:

Solution:

For some metals like copper, resistivity is nearly proportional to temperature although a non linear region always exists at very low temperature. Relation between resistivity and temperature is given by $ρ = ρ_{\circ} e^{- a T}$

Stream:NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Equivalent Resistance

⏱ 2mℹ️ Source: PYQ_2020

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