two lamps one rated 100w at 220v and other 60w at 220v are connected in parallel to electric mains supply. what current is drawn from the line if the supply voltage is 220v?
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Both the bulbs are connected in parallel. Therefore, potential difference across each of them will be 220 V, because no division of voltage occurs in a parallel circuit.
Both the bulbs are connected in parallel. Therefore, potential difference across each of them will be 220 V, because no division of voltage occurs in a parallel circuit.Current drawn by the bulb of rating 100 W is given by,Power = Voltage x Current
Both the bulbs are connected in parallel. Therefore, potential difference across each of them will be 220 V, because no division of voltage occurs in a parallel circuit.Current drawn by the bulb of rating 100 W is given by,Power = Voltage x CurrentCurrent = Power/Voltage = 60/220 A
Both the bulbs are connected in parallel. Therefore, potential difference across each of them will be 220 V, because no division of voltage occurs in a parallel circuit.Current drawn by the bulb of rating 100 W is given by,Power = Voltage x CurrentCurrent = Power/Voltage = 60/220 AHence, current drawn from the line = 100/220 + 60/220 = 0.727 A
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