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| 1. |
Define watt,kilowatt hour and electron volt |
| Answer» \xa0kilowatt hour = 1000watt hour = 100 × 60 × 60 watt sec = 3.6 × 10⁶ J [∵ watt = j/s so, watt.sec = j]hence, kilowatt hour = 3.6 × 10⁶ Jnow, electron volt ,eV = 1.6 × 10⁻¹⁹ C.volt = 1.6 × 10⁻¹⁹ J [ ∵ 1volt = 1J/C so, C.volt = J ]hence, eV = 1.6 × 10⁻¹⁹ J\xa0 | |