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The instantaneous values of emf and the current in a series ac circuit are: E = Eo sin ωt and I = Io sin (ωt + π/3) respectively, then it is
  • a)
    Necessarily a RL circuit
  • b)
    Necessarily a RC circuit
  • c)
    Necessarily a LCR circuit
  • d)
    Can be RC or LCR circuit
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
The instantaneous values of emf and the current in a series ac circuit...
(ωt) and I = Io sin(ωt + φ), where Eo, Io, and φ are constants.

The emf E is given by Eo sin(ωt), where Eo represents the maximum value of the emf and ω is the angular frequency. The current I is given by Io sin(ωt + φ), where Io represents the maximum value of the current and φ is the phase angle.

In a series ac circuit, the emf and current are in phase with each other, meaning that the phase angle φ is 0. This means that the current reaches its maximum value Io at the same time as the emf reaches its maximum value Eo. Both the emf and current vary sinusoidally with time, following a sine function.

The angular frequency ω determines the rate at which the emf and current oscillate. It is related to the frequency f by the equation ω = 2πf, where f is the frequency of the alternating current.

Overall, the instantaneous values of the emf and current in a series ac circuit can be represented by the equations E = Eo sin(ωt) and I = Io sin(ωt), respectively.
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Community Answer
The instantaneous values of emf and the current in a series ac circuit...
E = Eo sin ωt
I = 
as I can lead the voltage in RC and LCR circuit, so it can be RC or LCR circuit.
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The instantaneous values of emf and the current in a series ac circuit are: E = Eo sin ωt and I = Io sin (ωt + π/3) respectively, then it isa)Necessarily a RL circuitb)Necessarily a RC circuitc)Necessarily a LCR circuitd)Can be RC or LCR circuitCorrect answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The instantaneous values of emf and the current in a series ac circuit are: E = Eo sin ωt and I = Io sin (ωt + π/3) respectively, then it isa)Necessarily a RL circuitb)Necessarily a RC circuitc)Necessarily a LCR circuitd)Can be RC or LCR circuitCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The instantaneous values of emf and the current in a series ac circuit are: E = Eo sin ωt and I = Io sin (ωt + π/3) respectively, then it isa)Necessarily a RL circuitb)Necessarily a RC circuitc)Necessarily a LCR circuitd)Can be RC or LCR circuitCorrect answer is option 'D'. Can you explain this answer?.
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