Physics Online Quiz: Electrostatics

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Electrostatics Challenge

Test your knowledge on electrostatics with our comprehensive quiz! Perfect for students and enthusiasts alike, this quiz will challenge your understanding of electric fields, capacitance, and the fundamental laws governing electrostatic forces.

25 engaging questions
Multiple-choice and true/false formats
Ideal for review or practice

25 Questions6 MinutesCreated by ChargingAtom42

There are two charges 1 micro and 6 micro coulombs, the ratio of forces acting on them be:

1:25

1:6

1:1

6:1

The constant "k" in Coulomb's Law depends upon:

Nature of medium

System of units

Intensity of charges

Nature of medium & System of units

The ratio of the force between two small spheres with constant charges(A) in air,(B) in a medium of dielectric K is:

K2:1

1:K

K:1

1:K2

The force between two point charges separated by air is 4N.When separated by a medium of relative permitttivity 2, the force between them becomes:

1/2 N

One of materials listed below is to be placed between two identical metal sheets, with no air gap, to form a parallel-plate capacitor. Which produces the greatest capacitance?

Material of thickness 0.1 mm and dielectric constant 2

Material of thickness 0.2mm and dielectric constant 3

Material of thickness 0.4mm and dielectric constant 8

Material of thickness 0.5mm and dielectric constant 11

Two particles, X and Y, are 4m apart. X has a charge of 2Q and Y has a charge of Q. The force of X on Y:

Has twice the magnitude of the force of Y on X

Has half the magnitude of the force of Y on X

Has the same magnitude as the force of Y on X

Has one-fourth the magnitude of the force of Y on X

An electron traveling north enters a region where the electric field is uniform and points north. The electron:

Speeds up

Slows down

Veers east

Veers west

A hollow metal sphere is charged to a potential "V'. The potential at its center is:

-V

The equi-potential surfaces associated with a charged point particle are:

Radially outward from the particle

Vertical planes

Horizontal planes

Concentric spheres

If both plate area and plate separation of a parallel plate capacitor are doubled, the capacitance is:

Doubled

Halved

Unchanged

Tripled

Electric field intensity is 400 Vm-1 at a distance of 2m from a point charge. It will be 100 Vm-1 at a distance:

50cm

4cm

1.5m

The force between two charges 0.06 m apart is 5N. If each charge is moved towards each other by 0.01m,then the force between them will become:

7.20 N

11.25N

22.50N

45N

The capacitance of capacitor increases with decrease in:

Dielectric constant

Plates separation

Plates area

Thickness of plates

The automobiles wind shield wipers work on:

Electricity

Cell

Charging and discharging of capacitor

Charging and discharging of inductor

If 10C charge exerts a force F on 5C charge when placed near it, then the force exerted by 5C charge on 10C charge will be

F/2

F/(under-root 2)

When a body is connected to Earth, electrons from the Earth flow into the body. This means the body is:

Unchanged

Charged positively

Charged negatively

An insulator

If a dielectric is placed between the plates of a capacitor, its capacitance will:

Increase

Decrease

Becomes double

Both increase & decrease

A battery is disconnected after charging the capacitor and then placed a dielectric between the capacitor plates, which of the following quantity will not change:

Charge on plates

Electric intensity between plates

Energy stored between plates

Capacitance

Electron volt is unit of:

Energy

Electrical potential difference

Electric potential

Both b & c

Physics Online Quiz: Electrostatics

Electrostatics Challenge

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