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COMEDK · Physics · 23. Alternating Current

When an A.C. source is connected to a inductive circuit,

  1. A voltage and current are in same phase.
  2. B voltage lags behind current in phase.
  3. C the phase between voltage and current depends upon the value of inductance
  4. D voltage is ahead of current in phase.
Verified Solution

Answer & Solution

Correct Answer

(D) voltage is ahead of current in phase.

Step-by-step Solution

Detailed explanation

In a purely inductive circuit, the voltage \(V\) across the inductor is given by \(V = L \dfrac{di}{dt}\). If the current is \(i = I_0 \sin(\omega t)\), then the voltage is…