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Current Electricity question

2018 · 16 Apr · Shift 1 · Q58
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Current Electricity question

2018 · 16 Apr · Shift 1 · Q58

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
A heating element has a resistance of 100 Ω\OmegaΩ at room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500oC more than room temperature. what is the temperature coefficient of resistance of the heating element ?
  1. A
    0.5 ×\times× 10 −-− 4 oC −-− 1
  2. B
    5 ×\times× 10 −-− 4 oC −-− 1
  3. C
    1 ×\times× 10 −-− 4 oC −-− 1
  4. D
    2 ×\times× 10 −-− 4 oC −-− 1
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