A light bulb is rated at 100W 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 mH is connected to an AC source of 220 V. The RMS current in the circuit is:

(The frequency of the source is 50 Hz).

1. 20 A

2. 25 A

3. 28 A

4. 32 A

A lamp is connected in series with a capacitor. Predict your observations for dc and ac connections:

A lamp is connected in series with a capacitor. AC and DC sources are connected to the circuit one by one, then mark the correct statement/s.

A \(15.0~\mathrm{\mu F}\) capacitor is connected to a \(220~\mathrm{V}\), \(50~\mathrm{Hz}\) source. If the frequency is doubled, what happens to the capacitive reactance and the current?

A light bulb and an open coil inductor are connected to an ac source through a key as shown in the figure.

The switch is closed and after some time, an iron rod is inserted into the interior of the inductor. The glow of the light bulb:

1. increases

2. decreases

3. is unchanged, as the iron rod is inserted 

4. first increases and then decreases

A resistor of \(200~\mathrm{\Omega}\) and a capacitor of \(15.0~\mathrm{\mu F}\) are connected in series to a \(220~\mathrm{V}\), \(50\) Hz ac source. The voltage (RMS) across the resistor and the capacitor are respectively:
1. \( 160.3 \mathrm{~V}, 160.3 \mathrm{~V} \)
2. \( 151 \mathrm{~V}, 151 \mathrm{~V} \)
3. \( 160.3 \mathrm{~V}, 151 \mathrm{~V} \)
4. \( 151 \mathrm{~V}, 160.3 \mathrm{~V}\)

Which one of the following is incorrect?

A sinusoidal voltage of peak value 283 V and frequency 50 Hz is applied to a series LCR circuit in which R = 3$\Omega$, L = 25.48 mH, and C = 796 µF. The impedance of the circuit is:

1. 5 $\Omega$

2. 8 $\Omega$

3. 4 $\Omega$

4. 2 $\Omega$