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Power ElectronicsDevice Losses

A switch carries 20 A while its ON-state voltage drop is 2 V. Its instantaneous conduction loss during the ON interval is?

  • A10 W
  • B20 W
  • C40 W
  • D400 W
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Correct Answer: C. 40 W
Explanation: Conduction power loss is approximately VON×I=2×20=40 W while the device is ON.
Reference: Standard power electronics: device losses
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