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Answer :
Final answer:
The current drawn from the supply line by two lamps rated at 100 W and 60 W at 220 V connected in parallel is approximately 0.73 A.
Explanation:
The question asks about the current drawn from the supply line by two lamps rated at different power levels but sharing the same voltage when connected in parallel.
To find the total current, first calculate the current for each lamp separately using the formula P = V * I, where P is power, V is voltage, and I is current. Then, add the currents together since the lamps are in parallel and the voltage across each lamp remains the same:
- Current for 100 W lamp: I1 = P1 / V = 100 W / 220 V = 0.4545 A
- Current for 60 W lamp: I2 = P2 / V = 60 W / 220 V = 0.2727 A
- Total current: Itotal = I1 + I2 = 0.4545 A + 0.2727 A = 0.7272 A (rounded to 0.73 A)
Therefore, the current drawn from the supply line is approximately 0.73 A.
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