The RMS value of current in an AC circuit is \(10 ~\text A.\) The peak current in the circuit is:
1. \(1.41 ~\text A\)
2. \(14.1 ~\text A\)
3. \(7.07~\text A\)
4. \(0.707 ~\text A\)

A 60 µF capacitor is connected to a 110 V, 60 Hz ac supply. The RMS value of the current in the circuit is:

1. 2.49 A
2. 2.12 A
3. 1.97 A
4. 1.24 A

A series LCR circuit with R = 20 Ω, L = 1.5 H and C = 35 µF is connected to a variable-frequency 200 V ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

1.2200 W
2.2000 W
3.2020 W
4. 2120 W

A radio can tune over the frequency range of a portion of the MW broadcast band: (800 kHz to 1200 kHz). If its LC circuit has an effective inductance of 200 µH, what must be the range of its variable capacitor?

1. 87.8 pF−197.7 pF
2. 88.3 pF−198.8 pF
3. 89.3 pF−199.1 pF
4. 89.1 pF−196.9 pF

    
The amplitude of current at the resonating frequency is:
1. \(8.13\) A
2. \(3.82\) A
3. \(4.44\) A
4. \(1.41\) A

Figure shows a series LCR circuit connected to a variable frequency 230 V source. L = 5.0 H, C = 80uF, R = 40 $\Omega$

The RMS potential drop across the resistor under the resonating condition is:

1. 200 V
2. 220 V
3. 230 V
4. 0

A coil of inductance 0.50 H and resistance 100 $\Omega$ is connected to a 240 V, 50 Hz ac supply. What is the maximum current in the coil?

1. 1.29 A
2. 1.82 A
3. 2.29 A
4. 2.82 A