Practice Resonance In Lcr Circuit (4.3) - Electromagnetic Induction and Alternating

Practice: Resonance in LCR Circuit

Lesson 4.3Electromagnetic Induction and Alternating

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9 questions

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6 sample questions

Question 1.
What occurs in an LCR circuit at resonance?
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Think about what happens with opposition to current.
Question 2.
What is the formula for resonance frequency?
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Look for the relationship between frequency and the values of L and C.
3Question 3.
What happens at resonance in an LCR circuit?
- Impedance is maximum
- Impedance is minimum
- Current lags voltage
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Think about the relationship between impedance and current at resonance.
4Question 4.
True or False: At resonance, the inductive reactance equals capacitive reactance.
- True
- False
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Recall the definition of resonance.
Question 5.
You have a series LCR circuit with R = 5 Ω, L = 0.1 H, and C = 0.01 F. What is the resonance frequency, and explain the implications of adjusting L and C?
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Use the resonance frequency formula to find f first.
Question 6.
An electrical engineer wants to design a radio circuit to operate at 100 kHz. What values of L and C could be used to achieve resonance at this frequency?
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Work backward using the resonance frequency formula.

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