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MHT CET20244 May 2024Morning ShiftPhysicsAlternating CurrentActual

For the given figure, choose the correct option.

Options

  1. AThe r.m.s. current in circuit (B) can never be greater than that in circuit (A)
  2. BThe r.m.s. current in circuit (A) is always equal to that in circuit (B)
  3. CThe r.m.s. current in circuit (B) can be greater than in circuit (A)
  4. DAt resonance, current in (B) is less than that in circuit (A)

Correct answer

A. The r.m.s. current in circuit (B) can never be greater than that in circuit (A)

Step-by-step solution

As the impedance of the circuit (B) is clearly more than that of circuit (A), the current in the circuit (B) will always be less than that in circuit (A). Also, at resonance, X _ L = X _ C and the impedance of circuit (B), Z_B=Z_A . I_B=I_A . Hence, the option (A) is the only correct option.

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