- 1(current)
Q. No.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 \(A(\text{m}^2)\), the energy (joule) stored in the condenser is:
| 1. | \(\dfrac{1}{2}\varepsilon_0 E^2\) | 2. | \(\varepsilon_0 EAd\) |
| 3. | \(\dfrac{1}{2}\varepsilon_0 E^2Ad\) | 4. | \(\dfrac{E^2Ad}{\varepsilon_0}\) |
Subtopic: Â Energy stored in Capacitor |
 83%
Level 1: 80%+
NEET - 2021
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A \(12~\text{pF}\) capacitor is connected to a \(50~\text V\) battery. The electrostatic energy stored in the capacitor in \(\text{nJ}\) is:
| 1. | \(15\) | 2. | \(7.5\) |
| 3. | \(0.3\) | 4. | \(150\) |
Subtopic: Â Energy stored in Capacitor |
 72%
Level 2: 60%+
NEET - 2024
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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: Â Energy stored in Capacitor |
 65%
Level 2: 60%+
NEET - 2019
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If the plates of a parallel plate capacitor connected to a battery are moved closer to each other, then:
Choose the most appropriate answer from the options given below:
| (A) | The charge stored in it increases. |
| (B) | The energy stored in it decreases. |
| (C) | Its capacitance increases. |
| (D) | The ratio of charge to its potential remains the same. |
| (E) | The product of charge and voltage increases. |
| 1. | (A), (C) and (E) only |
| 2. | (B), (D) and (E) only |
| 3. | (A), (B) and (C) only |
| 4. | (A), (B) and (E) only |
Subtopic: Â Energy stored in Capacitor |
 60%
Level 2: 60%+
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: Â Energy stored in Capacitor |
 58%
Level 3: 35%-60%
NEET - 2022
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- 1(current)
Q. No.
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