A light bulb is rated at \(100\) W for a \(220\) V AC supply. The peak voltage of the source is:
1. \(220\) V
2. \(110\) V
3. \(311\) V
4. \(100\) V

A light bulb is rated at \(100~\text{W}\) for a \(220~\text{V}\) AC supply. The RMS current through the bulb is:
1. \(0.243\) A
2. \(0.454\) A
3. \(0.222\) A
4. \(0.312\) A

A pure inductor of \(25.0~\text{mH}\) is connected to an AC source of \(220~\text{V}\). The RMS current in the circuit is: (The frequency of the source is \(50~\text{Hz}\))
1. \(20~\text{A}\)
2. \(25~\text{A}\)
3. \(28~\text{A}\)
4. \(32~\text{A}\)

Which one of the following is incorrect?