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AC Applied to a Resistor

A 100Ω resi...

Question

A $100 Ω$ resistor is connected to a $220 V, 50 H z$ AC supply. Find $r m s$ value of current in the circuit :

A

1.10 A

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B

2.20 A

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C

3.30 A

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D

4.40 A

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Solution

The correct option is A $2.20 A$
$A n s w e r : -$ B
The rated voltage in bulb is rms voltage so using:
$V_{r m s} = I_{r m s} R$
$I_{r m s} = \frac{220}{100} = 2.20 A$

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