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2 nd Year : Unit 2.1 ( Current Electricity ) - Current Electricity

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The temperature coefficient resistivity of a material is 0.0004/K. When the temperature of the material is increased by 50º C, its resistivity increases by 2 × 10^-8 ohm-meter. The initial resistivity of the material in ohm-meter is

A. 50 × 10^-8

B. 90 × 10^-8

C. 100 × 10^-8

D. 200 × 10^-8

E. None of the above

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Correct choice: C

Explanation:

None

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Eamcet Physics 2 nd Year : Unit 2.1 ( Current Electricity ) - Current Electricity

Eamcet Physics
2 nd Year : Unit 2.1 ( Current Electricity ) - Current Electricity