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प्रश्न
An electric kettle connected to the 230 V mains supply draws a current of 10 A. Calculate:
(a) the power of the kettle.
(b) the energy transferred in 1 minute.
उत्तर
(a) Power, P = VI =` 230xx 10 = 2300 W`
(b) Energy transferred in one minute =`pxxt`
`=2300wxx60s`
`=13800 J`
`=138KJ`
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