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The temperature coefficient of resistivity of material is 0.0004/K. When the temperature of the material is increased by 50ºC , its resistivity increases by 2 x 10-8   o h m -meter. The initial resistivity of the material in ohm-meter is
  • a)
    50 x 10−8
  • b)
    90 x 10−8
  • c)
    100 x 10−8
  • d)
    200 x 10−8
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The temperature coefficient of resistivity of material is 0.0004/K. Wh...
K, the resistivity of the material will increase by:

0.0004/K x 50 K = 0.02

So the resistivity of the material will increase by 0.02 times its original value.
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The temperature coefficient of resistivity of material is 0.0004/K. When the temperature of the material is increased by 50ºC , its resistivity increases by 2 x 10-8 o h m -meter. The initial resistivity of the material in ohm-meter isa)50 x 10−8b)90 x 10−8c)100 x 10−8d)200 x 10−8Correct answer is option 'C'. Can you explain this answer?
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