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 The power for a purely resistive circuit is zero when?
  • a)
    Either current or voltage is zero
  • b)
    Both current and voltage are zero
  • c)
    Voltage is zero
  • d)
    Current is zero
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The power for a purely resistive circuit is zero when?a)Either current...
P=VIcosϕ Power in a circuit is the product of voltage, current and the cosine of the phase angle. Phase angle is 00 for purely resistive circuit so, P=VI. Hence if either voltage or current is zero, the power is zero.
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Community Answer
The power for a purely resistive circuit is zero when?a)Either current...
VIcos¢ is the power equation of resistor. cos ¢ cannot be zero. for zero power V or I should be zero
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