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Which of the following statements is true for a circuit containing inductance and resistance?
- a)e.m.f. leads the current
- b)Current leads the e.m.f.
- c)Current and e.m.f. are in phase
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
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Which of the following statements is true for a circuit containing ind...
The statement that e.m.f. leads current is true for a circuit containing inductance and resistance.
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Which of the following statements is true for a circuit containing ind...
Inductance and Resistance in a Circuit
When a circuit contains both inductance and resistance, the behavior of the current and voltage can be different from a circuit containing only resistance. This is because the inductor stores energy in a magnetic field, which can affect the flow of current.
Phase Difference between e.m.f. and Current
The phase difference between the e.m.f. (voltage) and the current in an inductive circuit can be described by a phase angle, which represents the time delay between the peak of the voltage and the peak of the current.
- If the circuit contains only resistance, the voltage and current are in phase, meaning they reach their peaks at the same time.
- If the circuit contains only inductance, the current lags the voltage, meaning the current reaches its peak after the voltage.
- If the circuit contains both resistance and inductance, the current can still lag the voltage, but the amount of phase shift depends on the relative values of resistance and inductance.
E.m.f. Leads the Current
In a circuit containing inductance and resistance, the e.m.f. (voltage) leads the current, meaning the voltage reaches its peak before the current. This is because the inductor resists changes in the flow of current, causing the current to lag behind the voltage. Therefore, option 'A' is the correct answer.
When a circuit contains both inductance and resistance, the behavior of the current and voltage can be different from a circuit containing only resistance. This is because the inductor stores energy in a magnetic field, which can affect the flow of current.
Phase Difference between e.m.f. and Current
The phase difference between the e.m.f. (voltage) and the current in an inductive circuit can be described by a phase angle, which represents the time delay between the peak of the voltage and the peak of the current.
- If the circuit contains only resistance, the voltage and current are in phase, meaning they reach their peaks at the same time.
- If the circuit contains only inductance, the current lags the voltage, meaning the current reaches its peak after the voltage.
- If the circuit contains both resistance and inductance, the current can still lag the voltage, but the amount of phase shift depends on the relative values of resistance and inductance.
E.m.f. Leads the Current
In a circuit containing inductance and resistance, the e.m.f. (voltage) leads the current, meaning the voltage reaches its peak before the current. This is because the inductor resists changes in the flow of current, causing the current to lag behind the voltage. Therefore, option 'A' is the correct answer.
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Which of the following statements is true for a circuit containing inductance and resistance?a)e.m.f. leads the currentb)Current leads the e.m.f.c)Current and e.m.f. are in phased)None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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