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Current Electricity question

2018 · 15 Apr · Shift 2 · Q68
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Current Electricity question

2018 · 15 Apr · Shift 2 · Q68

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
A constant voltages is applied between two ends of a metallic wire. If the length is halved and the radius of the wire is doubled, the rate of heat developed in the wire will be :
  1. A
    Doubled
  2. B
    Halved
  3. C
    Unchanged
  4. D
    Increased 8 times
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