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BITSAT2018PhysicsAlternating CurrentActual

A resistor R , an inductor L , a capacitor C and voltmeters V 1 , V 2 and V 3 are connected to an oscillator in the circuit as shown in the adjoining diagram. When the frequency of the oscillation is increased, then at the resonant frequency, the voltmeter reading is zero in the case of

Options

  1. Avoltmeter V 1 only
  2. Bvoltmeter V 2 only
  3. Cvoltmeter V 3 only
  4. DAll the three voltmeters

Correct answer

B. voltmeter V 2 only

Step-by-step solution

At resonance, X L = X C or ω L = 1 ω C Voltage across the series L - C combination, V 2 = i X L - X C = 0

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