Physics Ch 1 Class 12 Electrostatics


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Electron volt is the unit of

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if electron is moving along positive x axis and where V= Sx*3 then it

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If 60 capacitors each of Capacitance C are connected in series and then in parallel what is the ratio of Cs/Cp=?

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The magnitude of electrostatic acceleration force between two point charges is directly proportional to the product of the magnitude of the charges and inversely proportional to the square of the distance between them.” This is known as:

NTS 2015 SMBBMC
Physics
Electrostatics
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4/101

The charge on neutron is:

NUMS 2018
Physics
Electrostatics
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5/101

Two charges of same magnitude are placed, the force between the charges will be maximum in presence of which medium?

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If a closed surface contains two equal and opposite The net electric flux from the surface will be

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The energy stored inside a capacitor is given by the relation:

NUMS 2019 Reconduct
Physics
Electrostatics
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8/101

If we double the separation between two charges then coulomb’s force will become?

NUMS 2020
Physics
Electrostatics
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An electron is situated midway between two parallel plates 0.5 cm apart. One of the plates is maintained at a potential of 60 volts above the other. The force on the electron is (e = -1.6×10-19)

NTS 2011
Physics
Electrostatics
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10/101

0.37q charge Is stored on the capacitor, what will be the current?

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A particle carrying charge of 2e falls through a potential difference of 3.0 V. Calculate energy acquired by it.

NTS 2015 DUHS and JSMU
Physics
Electrostatics
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12/101

Two identical conducting spheres A and B carry equal charge Q. They are separated by a distance much larger than their diameters. A third identical conducting sphere C carries charge 2Q. Sphere C is first touched to A, then to I3, and finally removed. As a result, the electrostatic force between A and B, which was originally F, becomes:

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Two equal, opposite charges are fixed at a distance d. Positive charge is at the right and negative at the left position. As shown below:

X – Y + Z

At which position, the net electric field is directed to the left?

PMC Sample 2
Physics
Electrostatics
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In what form is the energy stored in a charged capacitor?

PMC 2020
Physics
Electrostatics
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Two conducting objects X and Y having a charge Q on them exert force F on each other. Now third conductor having a charge -Q is touched to X and is removed, the new force between X and Y will be:

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If the potential difference of 1 volt is applied across the end of a conductor and the current flowing through the conductor is one ampere then the resistance of the conductor is said to be?

NTS 2015 SMBBMC
Physics
Electrostatics
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17/101

Flux passing through an area does not depend upon

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60) What happens when a positive rod is placed near a neutral sphere?

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If voltage of a capacitor is 60 v then what will be the voltage if diamond is present as •dielectric

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Product of R and C is

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A proton has mass m and charge q. It is suspended in electric and gravitational field. What is the magnitude of electric field?

PMC Sample 3
Physics
Electrostatics
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The greek word “xeros” and “graphos” means:

PMC Sample 2
Physics
Electrostatics
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23/101

Which statement describes the electric potential difference between two points in the electric field of charge Q?

NTS 2019
Physics
Electrostatics
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24/101

Electric intensity between two plates of a capacitor equals:

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If magnitude of charges is doubled and distance between them is halved, the force between them will become?

26/101

The force between two point charges separated by a certain distance is F. If each charge is doubled and the distance between them is also doubled, then the force would be:

PMC Sample 1
Physics
Electrostatics
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27/101

What will be the change in potential energy if an electron moves 4.5m in the direction of an electric field of strength 325 N/C?

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If a dielectric material is placed between two plates of a capacitor, the net capacitance of the capacitor:

NTS 2018
Physics
Electrostatics
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29/101

Unit of permittivity in free space is?

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Three times decrease in the distance between the plates of a parallel plate capacitor will _______.

NTS 2019
Physics
Electrostatics
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