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The line the draws power supply to your house from street hasA. zero average currentB. 220 V average voltageC. voltage and current out of phasea by `90^(@)`D. voltage and current possibly differing in phase `phi` such that `|phi| lt (pi)/(2)` |
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Answer» Correct Answer - A::D The line that draws power supply to our house from street supplies alternating current, whose average `value//mean` value over a cycle is zero. As the line has some resistance `(R != 0)`, thereofore, voltage and current differ in phase `phi` such that `|phi| lt pi //2`. choice (a) and (d) are correct. |
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