CBSE Class 12 - Physics Part-I - Practice Test
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Engineering Courses
Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Certifications
Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

  2. Practice Tests
  3. CBSE Class 12 - Physics Part-I
CBSE Class 12 - Physics Part-I

CBSE Class 12 - Physics Part-I - Practice Test

Complete mock test on Electric Charges, Magnetic Effects, and Electromagnetic Waves. Features advanced physics concepts, mathematical applications, and theoretical understanding.

2025-07-19
Pavan Pavan
CBSE Class 12 Physics Grade 12

Duration

30 min

Questions

30

Marking

Negative

You've not yet enrolled in this practice test. Please login to start practice test.

Questions Preview

What is Coulomb’s law?

A
The law of gravitational force
B
The law that describes the force between two charges
C
The law of motion
D
The law that describes energy conservation

What does the electric field E represent?

A
The amount of charge
B
The force per unit charge at a point in space
C
The energy in a field
D
The rate of change of charge

What is the unit of electric field?

A
Volt
B
Newton per Coulomb
C
Ampere
D
Joule

Which of the following statements about electric field lines is true?

A
Electric field lines are continuous curves
B
Electric field lines form closed loops
C
Electric field lines never intersect
D
Electric field lines are imaginary constructs

What is the direction of the electric field due to a positive charge?

A
Radially inward
B
Radially outward
C
Towards the charge
D
Parallel to the surface

What does Gauss's law relate to?

A
The magnetic field inside a conductor
B
The flux of the electric field through a closed surface
C
The force between two charges
D
The motion of charged particles

In a uniform electric field, how does the electric field behave?

A
It is strongest at the center
B
It is strongest at the edges
C
It is constant throughout
D
It varies in a sinusoidal pattern

What is the electric field inside a conductor when it is in electrostatic equilibrium?

A
Zero
B
Uniform
C
Increases with distance from the center
D
Decreases with distance from the center

What is the electric flux through a surface dependent on?

A
The area and the angle between the surface and the electric field
B
Only the area
C
Only the electric field strength
D
Only the charge inside the surface

What is the electric field at a point due to a uniformly charged spherical shell outside the shell?

A
The same as if the total charge were concentrated at the center
B
Zero
C
Inversely proportional to the square of the distance
D
Inversely proportional to the distance

Which of the following is the unit of charge?

A
Volt
B
Ampere
C
Coulomb
D
Tesla

What is the relationship between the electric field and the electric potential difference?

A
Electric field is the gradient of the electric potential
B
Electric field is inversely proportional to the potential
C
Electric field and potential are independent
D
Electric field is the square of the electric potential

Which of the following best describes the electric field inside a uniformly charged spherical shell?

A
Zero
B
Proportional to the radius
C
Constant in all directions
D
Inversely proportional to the square of the distance

What is the result of the superposition principle in electrostatics?

A
The forces from multiple charges can be added vectorially
B
The forces from multiple charges cancel out
C
Only the nearest charge affects the force
D
Forces from multiple charges are always equal

What does quantisation of charge mean?

A
Charge can only exist in discrete units
B
Charge is continuous and can take any value
C
Charge is only positive
D
Charge is proportional to mass

Which of the following statements is true about the force between two charges?

A
The force is directly proportional to the product of charges
B
The force is independent of the charges
C
The force is inversely proportional to the distance
D
The force is inversely proportional to the square of the charges

What happens to the electric field when the distance from the charge is doubled?

A
It becomes four times weaker
B
It remains the same
C
It becomes twice as strong
D
It becomes half as strong

What does the direction of an electric field depend on?

A
The type of charge creating the field
B
The amount of charge creating the field
C
The location of the charge creating the field
D
The velocity of the charge

In which direction does the electric field point when a negative charge is present?

A
Radially inward
B
Radially outward
C
Perpendicular to the charge
D
Parallel to the surface

What is the main cause of electrostatic discharge?

A
Transfer of charge between two objects
B
An imbalance of magnetic fields
C
Movement of ions in air
D
Resonance of charged particles

What is Coulomb's law?

A
The law of gravitational force
B
The law that describes the force between two charges
C
The law that describes mass attraction
D
The law of thermodynamics

Which of the following is an example of an insulator?

A
Copper
B
Aluminum
C
Wood
D
Iron

What is the electric dipole moment?

A
It measures the charge on a body
B
It represents the separation between positive and negative charges
C
It determines the electric field of a conductor
D
It measures the strength of the electric field

Which of the following best describes the motion of charges in a conductor?

A
They are free to move inside the material
B
They are fixed in place
C
They move only when an external magnetic field is applied
D
They are bound by strong molecular forces

Which of the following is a property of electric charge?

A
It can be created or destroyed
B
It is always positive
C
Like charges attract each other
D
Charge is conserved

What is the electric field inside a conductor when it is in electrostatic equilibrium?

A
Zero
B
Uniform
C
Increases with distance from the center
D
Decreases with distance from the center

Which of the following is a characteristic of a point charge?

A
Its size is considered negligible compared to the distance between charges
B
It has a significant size
C
It attracts only negative charges
D
It repels only positive charges

What is the purpose of an electroscope?

A
To measure temperature
B
To detect the presence of charge
C
To measure electric current
D
To measure voltage

What happens to the electric field when a charged object is placed near a conductor?

A
The field is shielded inside the conductor
B
The field increases inside the conductor
C
The field is unaffected inside the conductor
D
The field is absorbed by the conductor

Which of the following equations describes Coulomb's law in terms of the vector notation?

A
F = k * (q1 * q2) / r^2
B
F = q1 * q2 / r^2
C
F = k * (q1 * q2) / (r^2 * r)
D
F = k * (q1 * q2) / r^3