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NEET
Exam
NEET
Subject
Physics
Chapter
Alternating Current

NEET · Physics · Alternating Current

If the input voltage V_ i to the circuit below is given by V_ i...

If the input voltage ViV_{i} to the circuit below is given by Vi(t)=Acos⁡(2πft)V_{i}(t)=A \cos (2 \pi f t), the output voltage is given by Vo(t)=Bcos⁡(2πft+ϕ)\mathrm{V}_{\mathrm{o}}(\mathrm{t})=\mathrm{B} \cos (2 \pi \mathrm{ft}+\phi) If the input voltage V_ i to the circuit below is given by V_ i (t)=A (2 π f t) , the output voltage is given by V_ o
Which one of the following four graphs best depict the variation of ϕ\phi vs ff ?

Options

  1. AWhat is the ratio of the ionization energy of a hydrogen atom from its first excited state to the ionization energy of
  2. BWhat is the ratio of the ionization energy of a hydrogen atom from its first excited state to the ionization energy of
  3. CWhat is the ratio of the ionization energy of a hydrogen atom from its first excited state to the ionization energy of
  4. DWhat is the ratio of the ionization energy of a hydrogen atom from its first excited state to the ionization energy of

Correct answer

C. What is the ratio of the ionization energy of a hydrogen atom from its first excited state to the ionization energy of

Step-by-step solution

If the input voltage V_ i to the circuit below is given by V_ i (t)=A (2 π f t) , the output voltage is given by V_ o
Resultant of VC,VR&BV_{C}, V_{R} \& B give ViV_{i} and angle between Vi&BV_{i} \& B is ϕ.\phi . When ff is very high XC→OX_{C} \rightarrow O then VC→O∴\mathrm{V}_{\mathrm{C}} \rightarrow \mathrm{O} \therefore Resultant of VC,VR& B\mathrm{V}_{\mathrm{C}}, \mathrm{V}_{\mathrm{R}} \& \mathrm{~B} lie between B\mathrm{B} and VR\mathrm{V}_{\mathrm{R}}If the input voltage V_ i to the circuit below is given by V_ i (t)=A (2 π f t) , the output voltage is given by V_ o
B lag behind ϕ\phi ∴\therefore At higher frequency ϕ\phi become - ve.
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