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Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET

Document Description: Parallel Plate Capacitor for NEET 2022 is part of Physics Class 12 preparation. The notes and questions for Parallel Plate Capacitor have been prepared according to the NEET exam syllabus. Information about Parallel Plate Capacitor covers topics like What is a Parallel Plate Capacitor?, Formula, Derivation and Parallel Plate Capacitor Example, for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Parallel Plate Capacitor.

Introduction of Parallel Plate Capacitor in English is available as part of our Physics Class 12 for NEET & Parallel Plate Capacitor in Hindi for Physics Class 12 course. Download more important topics related with notes, lectures and mock test series for NEET Exam by signing up for free. NEET: Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET
Table of contents
What is a Parallel Plate Capacitor?
Formula
Derivation
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What is a Parallel Plate Capacitor?

Parallel Plate Capacitors are formed by an arrangement of electrodes and insulating material or dielectric. A parallel plate capacitor can only store a finite amount of energy before dielectric breakdown occurs. It can be defined as:

When two parallel plates are connected across a battery, the plates are charged and an electric field is established between them, and this setup is known as the parallel plate capacitor.

Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET

Formula

The direction of the electric field is defined as the direction in which the positive test charge would flow. Capacitance is the limitation of the body to store the electric charge. Every capacitor has its capacitance. The typical parallel-plate capacitor consists of two metallic plates of area A, separated by the distance d.

The parallel plate capacitor formula is given by: C = kєºA/d

Where,

ϵo is the permittivity of space (8.854 × 10−12 F/m)

k is the relative permittivity of dielectric material

d is the separation between the plates

A is the area of plates

Derivation

Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET

Let the two plates be parallel each other each carrying a surface charge density and −σ respectively. A is the area of the plates and d is the separation between them.

The electric field of a thin charged plate is given by Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET and is directed normally outwards from the plate. The total electric field between the two plates is given as

Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET

The potential difference between the two plates is

Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET

The capacitance is

Parallel Plate Capacitor Notes | Study Physics Class 12 - NEET

Try Yourself!

Question for Parallel Plate Capacitor
Try yourself: Identify the factor on which the capacitance of a parallel plate capacitor does not depend.
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Question for Parallel Plate Capacitor
Try yourself:Calculate the capacitance of the capacitor, if 1012 electrons are transferred from one conductor to another of a capacitor and a potential difference of 10 V develops between the two conductors.
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Question for Parallel Plate Capacitor
Try yourself:How is the electric field between the two plates of a parallel plate capacitor?
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Question for Parallel Plate Capacitor
Try yourself: Identify the simplest and the most widely used capacitor among the following.
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