Physics Online Quiz: Electrostatics
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
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
2N
4N
8N
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
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
4m
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)
2F
F
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
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