Several electric bulbs designed to be used on a 220V electric supply line, are rated
10W. How many lamps can be connected in parallel with each other across the two
wires of 220 V line if the maximum allowable current is 10 A?
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Answered by
3
Answer:
220 lamps
Explanation:
Maximum power that can be dissipated = I^2R
P = I^2R
R = V/I
R = (220V/10A) [Resistance for one lamp]
R = 22 ohms
P = 10^2 * (220/10) = 2200W [Total power that allowed to be dissipated]
Power rating for each lamp: 10W
2200/10 = 220 lamps
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6
hey mate this is ur answer.....
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