+1-315-636-4485
+91 98151-74050 
This is an MCQ-based quiz on the topic of Complete alternating current numerical quiz.
This set of MCQs helps you brush up on the important physics topics and prepare you to dive into skill practice and expand your knowledge.
A peak value of current I0=0.55 A flows through an LCR circuit of resistance R=200Ω, inductive reactance XL=300Ω and capacitive reactance XC=400Ω. Determine the magnitude of the peak supply voltage in V.
110
165
123
110
The wiring of a lighthouse's searchlight beacon is shown in the diagram below. Determine how much current is flowing through the searchlight at any given moment. What is the circuit's impedance?
0.353 A, 800
0.25 A, 80
0.25 A, 56
0.3535 A, 80
The admittance of a series LRLR circuit is found to be 2×10−3 Ω-1.Determine the angular frequency of oscillation of this circuit, given L=0.5 H and R=100Ω.
150
490
98
980
Consider the following oscillating circuit that is used to tune the radio frequency of an AM/FM radio. The voltage drops across the current elements are VL=50 V, VC=80 V and VR=40 respectively. What is the voltage of the alternator used in V ?
30
40
50
90
A resistance R Ω is connected in series with capacitance C Farad value of impedance of the circuit is 10 Ω and R = 6Ω so, find the power factor of circuit.
0.4
0.6
0.67
0.9
In a series resonant circuit, the a.c. voltage across resistance R, inductance L and capacitance C are 5V, 10V and 10V, respectively. The a.c. voltage applied to the circuit will be _____ V.
20
10
5
25
A coil of resistance 2000 Ω and self-inductance 1.0 Henry has been connected to an a.c. source of frequency 2000/2π Hz. The phase difference between voltage and current is
30
60
45
75
The average power dissipation in pure inductance in ac circuit, is _____ * Li^2.
1/2
2
1/4
0
In an a.c. circuit V and I are given by V = 50 sin50t volt and I = 100 sin(50t + π/3) mA. The power dissipated in the circuit _____ kW
2.5
1.25
5.0
500
Consider the following oscillating circuit that is used to tune the radio frequency of an AM/FM radio. The voltage drops across the current elements are VL=50 V VL=50 V, VC=80 V. VC=80 V and VR=40 V VR=40 V respectively. What is the voltage of the alternator used in V ?
30
40
50
90
