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NEETPhysicsAlternating Current

As per the given graph, choose the correct representation for curve A and curve B Where X C = Reactance of pure capacitive circuit connected with A.C. source X L = Reactance of pure inductive circuit connected with A.C. source R = Impedance of pure resistive circuit connected with A.C. source Z = Impedance of the L C R series circuit

Options

  1. AA = X C , B = R
  2. BA = X L , B = R
  3. CA = X L , B = Z
  4. DA = X C , B = X L

Correct answer

D. A = X C , B = X L

Step-by-step solution

The formula to calculate the inductive reactance is X L = ω L . . . 1 The formula to calculate capacitive reactance is X C = 1 ω C . . . 2 As can be seen from equation (1), the inductive reactance varies directly with the frequency and equation (2) indicates that capacitive reactance varies inversely with the frequency. Hence, curve A represents the capacitive reactance and curve B represents the inductive reactance.

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