A torch bulb is rated at 3V and 600mA. Calculate it’s (a) Power b) Resistance c) Energy consumed if it is lighted for 4 Hrs.
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resistance=3/600=0.005ohm
power=3×600=1800mw
energy=1800/240=900/120=7.5j
hope it will help u..........
power=3×600=1800mw
energy=1800/240=900/120=7.5j
hope it will help u..........
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