Practice Alternating Current (ac) (2) - Electromagnetic Induction and Alternating

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does AC stand for?
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Think about the current that changes direction.
Question 2.
What is the equation for representing AC current?
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What does each symbol in the equation represent?
3Question 3.
What is the equation representing the voltage in an AC circuit?
- V = V₀ sin(ωt)
- V = I₀ sin(ωt)
- V = 2πf
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Focus on the voltage equation form.
4Question 4.
True or False: RMS values are larger than peak values.
- True
- False
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Consider how RMS is derived.
Question 5.
If an AC circuit has a peak voltage of 120V, calculate the RMS voltage. Explain why RMS is used in practice.
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Remember the formula for converting peak to RMS.
Question 6.
Given a capacitor in an AC circuit, demonstrate the relationship of current and voltage with a wave chart.
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Sketch the sine wave for voltage and current!

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