Definitions [3]
Definition: The Parallel Plate Capacitor
A capacitor that consists of two large, parallel, conducting plates separated by a small distance is called a parallel plate capacitor.
Definition: Dielectric Constant
The ratio of the permittivity of a medium to the permittivity of vacuum.
K = ε / ε₀
OR
Dielectric constant is the factor by which the capacitance of a capacitor increases when a dielectric is completely inserted between its plates.
Definition: Permittivity of a Medium
The product of vacuum permittivity and dielectric constant of the medium.
ε = ε₀K
Formulae [1]
Formula: Capacitance of a Parallel Plate Capacitor
For two plates separated by distance d:
\[C=\frac{\varepsilon_0A}{d}\]
With a dielectric medium:
\[C=\frac{K\varepsilon_0A}{d}\]
Important Questions [11]
- Find the Mechanical Force per Unit Area of the Charged Conductor.
- The Energy Density at a Point in a Medium of Dielectric Constant 6 is 26.55 × 106 J/M3. Calculate Electric Field Intensity at that Point
- A Parallel Plate Air Condenser Has a Capacity of 20µF. What Will Be a New Capacity If: 1) The Distance Between the Two Plates is Doubled? 2) A Marble Slab of Dielectric
- Draw a Neat Labelled Diagram of a Parallel Plate Capacitor Completely Filled with Dielectric.
- Define Capacitance of a Capacitor and Its Si Unit.
- Obtain an Expression for Electric Field Intensity at a Point Outside Uniformly Charged Thin Plane Sheet
- A Cube of Marble Having Each Side 1 Cm is Kept in an Electric Field of Intensity 300 V/M. Determine the Energy Contained in the Cube of Dielectric Constant 8.
- What is the Charge on the Capacitor?
- Intensity of Electric Field at a Point Close to and Outside a Charged Conducting Cylinder is Proportional To
- A network of four capacitors of 6 μF each is connected to a 240 V supply. Determine the charge on each capacitor.
- With the Help of a Neat Diagram, Describe the Construction and Working of Van De Graff Generator.
