A wattmeter is measuring the power supplied to a circuit whose power factor is 0.7. The frequency of the supply is 50 cycles/second. The wattmeter has a potential coil circuit of resistance 1000Ω and inductance 0.5H. The error in the meter reading is

A wattmeter is measuring the power supplied to a circuit whose power f

1.	A wattmeter is measuring the power supplied to a circuit whose power factor is 0.7. The frequency of the supply is 50 cycles/second. The wattmeter has a potential coil circuit of resistance 1000Ω and inductance 0.5H. The error in the meter reading is
A.	4%
B.	8%
C.	12%
D.	16%
Answer» E.

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A wattmeter is measuring the power supplied to a circuit whose power factor is 0.7. The frequency of the supply is 50 cycles/second. The wattmeter has a potential coil circuit of resistance 1000Ω and inductance 0.5H. The error in the meter reading is

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