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In an RLC circuit, what does the term 'resonance' refer to? (2019)

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Question: In an RLC circuit, what does the term \'resonance\' refer to? (2019)

Options:

  1. Maximum current at a specific frequency
  2. Minimum current at any frequency
  3. Constant voltage
  4. Zero inductance

Correct Answer: Maximum current at a specific frequency

Exam Year: 2019

Solution: 

Resonance in an RLC circuit occurs when the inductive reactance equals the capacitive reactance, resulting in maximum current at a specific frequency.

In an RLC circuit, what does the term 'resonance' refer to? (2019)

Practice Questions

Q1
In an RLC circuit, what does the term 'resonance' refer to? (2019)
  1. Maximum current at a specific frequency
  2. Minimum current at any frequency
  3. Constant voltage
  4. Zero inductance

Questions & Step-by-Step Solutions

In an RLC circuit, what does the term 'resonance' refer to? (2019)
  • Step 1: Understand what an RLC circuit is. It is a circuit that contains a resistor (R), an inductor (L), and a capacitor (C).
  • Step 2: Learn about reactance. Inductive reactance (XL) is the opposition to current flow caused by the inductor, while capacitive reactance (XC) is the opposition caused by the capacitor.
  • Step 3: Know that resonance happens when the inductive reactance (XL) equals the capacitive reactance (XC).
  • Step 4: When XL equals XC, the circuit allows maximum current to flow at a specific frequency, called the resonant frequency.
  • Step 5: This means that at this frequency, the effects of the inductor and capacitor cancel each other out, leading to a very efficient circuit.
  • Resonance in RLC Circuits – Resonance occurs when the inductive reactance (XL) equals the capacitive reactance (XC), leading to maximum current flow at a specific frequency known as the resonant frequency.
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