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JEE Main 20206 SeptemberMorning Shift
Exam
JEE Main
Year
2020
Date
6 September
Shift
Morning Shift
Subject
Physics
Chapter
Capacitance

JEE Main 2020 · 6 September · Morning Shift · Physics · Capacitance

For the given input voltage waveform V _ in ( t ) , the output...

For the given input voltage waveform Vin(t),{V}_{\text{in}} ( t ) , the output voltage waveform V0(t),{V}_{0} ( t ) , across the capacitor is correctly depicted by :

For the given input voltage waveform V _ in ( t ) , the output voltage waveform V _ 0 ( t ) , across the capacitor is

Options

  1. AHow many squares are there in the square figure ABCD ?
  2. BHow many squares are there in the square figure ABCD ?
  3. CHow many squares are there in the square figure ABCD ?
  4. DHow many squares are there in the square figure ABCD ?

Correct answer

A. How many squares are there in the square figure ABCD ?

Step-by-step solution

For the given input voltage waveform V _ in ( t ) , the output voltage waveform V _ 0 ( t ) , across the capacitor is

When first pulse is applied the potential across capacitor is given by V=V0(1−e−tRC)V = {V}_{0}\left(1 - {e}^{- \dfrac{t}{RC}}\right)

When no pulse is applied, capacitor will discharge like V=V0′et/RCV = {V}_{0}^{'}{e}^{t / RC} when again, second pulse is applied V=V0(1−e−tRC)V = {V}_{0}\left(1 - {e}^{- \dfrac{t}{RC}}\right)

Using all three equations the correct graph is :

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