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Question

The voltage V and current i of a device are


The power P indicated by wattmeter will be 

A.

1000 W

B.

774 W

C.

500 W

D.

433 W

Answer ( Option D)

433 W

Solution

A wattmeter is a device which is used to find active power,

             Watt

Where  is the phase difference, which is here 300.



Hence, the correct option is (D).

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