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A parallel plate capacitor is charged and then isolated. The effect of increasing the plate separation on charge, potential, capacitance respectively are

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Important Questions on Electrostatics

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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q1
A slab of material of dielectric constant  k has the same area A as the plates of a parallel plate capacitor and has thickness 34d, where d is the separation of the plates. The change in capacitance when the slab is inserted between the plates is 
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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q1
Energy stored in a capacitor and dissipated during charging a capacitor bear a ratio.
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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q1
Charge +q and -q are placed at points A and B  respectively which are distance 2L  apart. C is the mid point of A and B. The work done in moving a charge +Q along the semicircle CRD as shown in the figure below is 
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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q1
A parallel plate capacitor has circular plates of radius 8 cm and plate separation lmm. What will be the charge on the plates if a potential difference of 100 V is applied? 
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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q2

A charge ‘q’ is moved from a point A above a dipole of dipole moment ‘p’ to a point B below the dipole in equatorial plane without acceleration. Find the work done in the process.

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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q2
The difference between the radii of the two spheres of a spherical capacitor is increased. Will the capacitance increase or decrease?
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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q2
A metal plate is introduced between the plates of a charged parallel plate capacitor. What is its effect on the capacitance of the capacitor?
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12th Maharashtra Board
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Physics Standard 12>Chapter 8 - Electrostatics>Exercises>Q Q2
The safest way to protect yourself from lightening is to be inside a car. Justify.