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Electricity — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceElectricity1 Mark
MCQ
The heat produced by passing an electric current through a fixed resistor is proportional to the square of:
  • A
    Magnitude of resistance of the resistor.
     
  • B
    Temperature of the resistor.
     
  • ✓
    Magnitude of current.
     
  • D
    Time for which current is passed.
✓

Answer

Correct option: C.
Magnitude of current.
 
We know that:
$H = I^2Rt$
It shows that the heat produced is proportional to the square of the current.

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