Alternating current
Quiz
•
Physics, English
•
12th Grade
•
Practice Problem
•
Hard
Салия Туктубаева
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is alternating current
the process of inducing an emf (voltage) with a change in magnetic flux
Electric currents whose direction and magnitude change periodically depending on time
Steady current which delivers the same average power as the a.c. to a resistive load.
Making a rectified current more steady (or smooth) by placing a capacitor in parallel with the resistor
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does AC smoothing mean?
the process of inducing an emf (voltage) with a change in magnetic flux
Electric currents whose direction and magnitude change periodically depending on time are called alternating current
Steady current which delivers the same average power as the a.c. to a resistive load.
Making a rectified current more steady (or smooth) by placing a capacitor in parallel with the resistor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Defines of the effective value of alternating current
The process of inducing an emf (voltage) with a change in magnetic flux
Electric currents whose direction and magnitude change periodically depending on time are called alternating current
Steady current which delivers the same average power as the a.c. to a resistive load.
Making a rectified current more steady (or smooth) by placing a capacitor in parallel with the resistor
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Electromagnetic Induction is ...
The process of inducing an emf (voltage) with a change in magnetic flux
Electric currents whose direction and magnitude change periodically depending on time are called alternating current
Steady current which delivers the same average power as the a.c. to a resistive load.
Making a rectified current more steady (or smooth) by placing a capacitor in parallel with the resistor
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the Y-sensitivity and time-base for the trace shown in Figure are 5 V/cm and 20 ms/cm, what are the amplitude, period and frequency of the signal to Y-input?
3.5 V, 80 ms, 50 Hz
20 V, 40 ms, 50 Hz
17.5 V, 80 ms, 12.5 Hz
22.5 V, 12.5 ms, 55 Hz
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Find the inductive reactance of the circuit shown in the figure
100Ω
6,28Ω
3,14Ω
5,22Ω
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A series RLC circuit has a resistance of 10.0 Ω and a impedance of 50.0 Ω. If the rms voltage applied to the circuit is 10 V, what average power?
0.4W
4W
5W
50W
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