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Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
Question
What is the effect on the resistance due to increase in the temperature?
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Answer

Due to small change in temperature, there is no change in thermal expansion but for more change in temperature of resistance, ratio of length and area of crosssection will decrease which will affect the resistance.

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