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A resistor carries a current 'I' and dissipates power ‘P’. What will be the power dissipated if the same resistor carries a current 4I?

A resistor carries a current 'I' and dissipates power ‘P’. What will be the power dissipated if the same resistor carries a current 4I? Correct Answer 16P

  • The formula for power dissipated in a circuit is P = I2R, therefore we can clearly see that power is proportional to square of current.
  • Hence multiplying current by 4 will increase power dissipated by 16 times.

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