In an RLC circuit, what does the term 'resonance' refer to? (2019)
Practice Questions
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Q1
In an RLC circuit, what does the term 'resonance' refer to? (2019)
Maximum current at a specific frequency
Minimum current at any frequency
Constant voltage
Zero inductance
Resonance in an RLC circuit occurs when the inductive reactance equals the capacitive reactance, resulting in maximum current at a specific frequency.
Questions & Step-by-step Solutions
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Q
Q: In an RLC circuit, what does the term 'resonance' refer to? (2019)
Solution: Resonance in an RLC circuit occurs when the inductive reactance equals the capacitive reactance, resulting in maximum current at a specific frequency.
Steps: 5
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.
