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Question
A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply.
What is the net power consumed over a full cycle?
Sum
Solution
Resistance of the resistor, R = 100 Ω
Supply voltage, V = 220 V
Frequency, ν = 50 Hz
The net power consumed over a full cycle is given as:
P = VI
`= 220 xx 2.2`
`= 484 "W"`
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