If the plates of a parallel plate capacitor connected to a battery are moved close to each other, then:
\(\mathrm A.\) the charge stored in it, increases.
\(\mathrm B.\) the energy stored in it, decreases.
\(\mathrm C.\) its capacitance increases.
\(\mathrm D.\) the ratio of charge to its potential remains the same.
\(\mathrm E.\) the product of charge and voltage increases.
Choose the most appropriate answer from the options given below:
1. \(\mathrm {A,C}\) and \(\mathrm E.\) only
2. \(\mathrm {B,D }\) and \(\mathrm E.\) only
3. \(\mathrm{A,B}\) and \(\mathrm C.\) only
4. \(\mathrm{A,B}\) and \(\mathrm E.\) only
Subtopic:  Energy stored in Capacitor |
 59%
From NCERT
NEET - 2024
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A capacitor of capacitance \(C=900~\text{pF}\) is charged fully by \(100~\text{V}\) battery \(B\) as shown in Figure \((a)\). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance \(C=900~\text{pF}\) as shown in Figure \((b)\). The electrostatic energy stored by the system \((b)\) is:
       
1. \(1.5\times 10^{-6}~\text{J}\) 2. \(4.5\times 10^{-6}~\text{J}\)
3. \(3.25\times 10^{-6}~\text{J}\) 4. \(2.25\times 10^{-6}~\text{J}\)
Subtopic:  Energy stored in Capacitor |
 56%
From NCERT
NEET - 2022
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Two identical capacitors \(C_{1}\) and \(C_{2}\) of equal capacitance are connected as shown in the circuit. Terminals \(a\) and \(b\) of the key \(k\) are connected to charge capacitor \(C_{1}\) using a battery of emf \(V\) volt. Now disconnecting \(a\) and \(b\) terminals, terminals \(b\) and \(c\) are connected. Due to this, what will be the percentage loss of energy?
     
1. \(75\%\)
2. \(0\%\)
3. \(50\%\)
4. \(25\%\)

Subtopic:  Energy stored in Capacitor |
 63%
From NCERT
NEET - 2019
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A parallel plate condenser has a uniform electric field E(V/m) in the space between the plates. If the distance between the plates is d(m) and area of each plate is A(m2), the energy (joule) stored in the condenser is:

1. 12ε0E2

2. ε0EAd

3. 12ε0E2Ad

4. E2Ad/ε0

Subtopic:  Energy stored in Capacitor |
 80%
From NCERT
NEET - 2021
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