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NEET2004PhysicsCurrent ElectricityActual

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be:

Options

  1. A60 watt
  2. B180 watt
  3. C10 watt
  4. D20 watt

Correct answer

D. 20 watt

Step-by-step solution

The resistance of each bulb is V^2 P = (200)^2 60 when three bulbs are connected in series then equivalent resistance is 3 (200)^2 60 Power P= V^2 R_ e q =20 ~W

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