A bulb uses 5000J of energy in 10s, calculate its power.

J / s

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500

W a t t s

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W a t t s

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600

J / s

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Solution

The correct option is C 500 $W a t t s$
Given : $E = 5000$ J $t = 10$ s
Power of the bulb $P o w e r = \frac{E n e r g y s p e n t}{T i m e}$ $P = \frac{E}{t} = \frac{5000}{10} = 500$ $W a t t s$

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250 J

10 s

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