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  • Solve it, A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be

A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be

  • Option 1)

    750 watt

  • Option 2)

    500 watt

  • Option 3)

    250 watt

  • Option 4)

    1000 watt.

 

Answers (2)

best_answer

As we have learned

Power dissipiated in the external circuit -

(\frac{nE}{R+nr})^{2}\cdot R

-

 

 P = \left ( \frac{V}{V_0 } \right )^2 P_0 = \left ( \frac{110}{220} \right )^2\times 1000W \\=250W

 


Option 1)

750 watt

Option 2)

500 watt

Option 3)

250 watt

Option 4)

1000 watt.

Posted by

Avinash

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