Please solve the 13 problem.
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Q.13. An electric bulb is rated '250 W, 230 V'. Calculate:
(i) the energy consumed in one hour, and
(ii) the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.
Ans. (i) 9$\times {10}^5$ J (ii) 4 h