Practice Ac In Circuit Elements (3) - Electromagnetic Induction and Alternating

Practice: AC in Circuit Elements

Lesson 3Electromagnetic Induction and Alternating

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11 questions

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6 sample questions

Question 1.
What is the phase relationship between voltage and current in a pure resistor?
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Remember how both values reach their maximum together.
Question 2.
Does a pure inductor consume net power?
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Consider how energy moves in and out without loss.
3Question 3.
What is the phase difference between voltage and current in a pure resistor?
- 0 degrees
- 90 degrees
- 180 degrees
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Think about how they behave similarly.
4Question 4.
True or False: In a pure inductor, current leads voltage.
- True
- False
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Remember which leads which.
Question 5.
An AC circuit contains a pure resistor, an inductor, and a capacitor. The RMS voltage is 120V, the resistance is 40 ohms, and the inductor has an inductance of 0.1H while the capacitor has a capacitance of 100μF. Calculate the RMS current through the circuit.
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Find the frequency to calculate the reactances.
Question 6.
In a series AC circuit, if the phase angle is known to be 45 degrees, find the real power consumed if the system operates at an RMS voltage of 240V and RMS current of 10A.
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Use the cosine of the phase angle for power calculation.

7 more questions in this section. Enroll free to practise them all.