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JEE Main 202118 MarchMorning Shift
Exam
JEE Main
Year
2021
Date
18 March
Shift
Morning Shift
Subject
Physics
Chapter
Alternating Current

JEE Main 2021 · 18 March · Morning Shift · Physics · Alternating Current

In a scries LCR resonance circuit, if we change the resistance...

In a scries LCRLCR resonance circuit, if we change the resistance only, from a lower to higher value :

Options

  1. AThe bandwidth of resonance circuit will increase.
  2. BThe resonance frequency will increase.
  3. CThe quality factor will increase.
  4. DThe quality factor and the resonance frequency will remain constant.

Correct answer

A. The bandwidth of resonance circuit will increase.

Step-by-step solution

The bandwidth of resonance circuit will increase.

As we know that Bandwidth =R/L= R / L.

Bandwidth ∝R∝ R.

So, bandwidth will increase.

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