Class 12 Exam > Class 12 Questions > In purely inductive circuits, the current:a)l...
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In purely inductive circuits, the current:
- a)lags behind voltage by π/2
- b)lead the voltage by π/2
- c)is in phase with the voltage
- d)none of the above
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In purely inductive circuits, the current:a)lags behind voltage by &pi...
Explanation:
- Inductive Circuits:
In purely inductive circuits, the current lags behind the voltage by π/2 (90 degrees). This is because in an inductive circuit, the voltage leads the current due to the phase shift caused by the presence of inductance.
- Phase Relationship:
When an alternating current passes through an inductor, a back EMF is induced in the coil which opposes the flow of current. This causes the current to lag behind the voltage in an inductive circuit.
- Mathematical Representation:
Mathematically, this phase shift can be represented as a phase angle of π/2 (90 degrees) between the current and voltage in a purely inductive circuit.
- Conclusion:
Therefore, in purely inductive circuits, the current lags behind the voltage by π/2 due to the inherent characteristics of inductors to oppose changes in current flow.
- Inductive Circuits:
In purely inductive circuits, the current lags behind the voltage by π/2 (90 degrees). This is because in an inductive circuit, the voltage leads the current due to the phase shift caused by the presence of inductance.
- Phase Relationship:
When an alternating current passes through an inductor, a back EMF is induced in the coil which opposes the flow of current. This causes the current to lag behind the voltage in an inductive circuit.
- Mathematical Representation:
Mathematically, this phase shift can be represented as a phase angle of π/2 (90 degrees) between the current and voltage in a purely inductive circuit.
- Conclusion:
Therefore, in purely inductive circuits, the current lags behind the voltage by π/2 due to the inherent characteristics of inductors to oppose changes in current flow.
Most Upvoted Answer
In purely inductive circuits, the current:a)lags behind voltage by &pi...
Explanation : In a purely inductive circuit the voltage nd current wave forms r not in phase . Inductance opposes change in current due to back emf effect .ds causes the current to reach it's peak value sometime after the voltage .So in an inductive circuit ,current "LAGS" voltage.
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In purely inductive circuits, the current:a)lags behind voltage by &pi...
90 degrees.
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