Electrostatics Additional Practice Test

12th Standard Physics — Electrostatics: Additional Online Practice Test

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 15 questions available.

Set up your test

Number of questions

Time limit

Time remaining00:00

Which specific branch of electricity deals with the behavior and study of stationary charges at rest?

A.Magnetostatics B.Electrostatics C.Electrodynamics D.Current Electricity

In the SI system of units, what is the approximate numerical value of the proportionality constant \(k\) used in Coulomb's law for free space?

A.\(9 \times 10^9\) N m\(^2\) C\(^{-2}\) B.\(8.85 \times 10^{-12}\) C\(^2\) N\(^{-1}\) m\(^{-2}\) C.\(1.6 \times 10^{-19}\) C D.\(6.63 \times 10^{-34}\) J s

What is the standard SI unit used to measure the intensity of an electric field?

A.Coulomb meter (C m) B.Newton per Coulomb (N C\(^{-1}\)) C.Joule per Coulomb (J C\(^{-1}\)) D.Volt meter (V m)

Why is it physically impossible for two electric field lines to intersect each other in a region of space?

A.Because they are always parallel to each other B.Because they would neutralize each other at that point C.Because the electric field would have two different directions at the same point D.Because field lines only exist in one dimension

What is the conventional direction assigned to the electric dipole moment vector?

A.From the positive charge to the negative charge B.Perpendicular to the axis joining the charges C.From the negative charge to the positive charge D.Radially outward from the midpoint

At very large distances \(r\) from a dipole, how does the electric field magnitude on the axial line compare to the field magnitude on the equatorial plane at the same distance?

A.They are exactly equal in magnitude B.The axial field is twice as strong as the equatorial field C.The equatorial field is twice as strong as the axial field D.The axial field is four times as strong

How is the electrostatic potential difference between two points P and R defined?

A.The work done by an external force to bring a unit positive charge from R to P B.The total electrostatic force acting between points R and P C.The product of the charge and the distance between the two points D.The potential energy stored in a single stationary point charge

What is the net work done when moving a test charge between any two points located on the same equipotential surface?

A.Maximum work is done B.Work depends on the path taken C.Zero work is done D.Work equals the product of charge and field

According to Gauss's law, on what factor does the total electric flux passing through a closed Gaussian surface solely depend?

A.The geometric shape and size of the surface B.The net electric charge enclosed within the surface C.The distribution of charges located outside the surface D.The velocity of the charges moving inside the surface

Q10

In the context of electrostatic shielding, what is the value of the electric field inside a cavity of a conductor?

A.It is equal to the external applied field B.It varies based on the shape of the cavity C.It is always zero D.It depends on the material of the conductor

Q11

What phenomenon occurs in a non-polar dielectric molecule when it is subjected to an external electric field?

A.It loses its electrons and becomes ionized B.Its positive and negative charge centers coincide more perfectly C.It acquires an induced dipole moment D.It begins to flow like a metallic conductor

Q12

The SI unit of capacitance, the Farad, is named in honor of which renowned scientist?

A.Charles Coulomb B.Alessandro Volta C.Michael Faraday D.James Clerk Maxwell

Q13

What is the effect on the capacitance of a parallel plate capacitor when a dielectric material with relative permittivity \(\epsilon_r\) is inserted between its plates?

A.The capacitance decreases by a factor of \(\epsilon_r\) B.The capacitance remains constant C.The capacitance increases by a factor of \(\epsilon_r\) D.The capacitance becomes independent of plate area

Q14

In an irregularly shaped charged conductor, why is the surface charge density highest at the regions with the sharpest points?

A.Because the surface area is largest at sharp points B.Because the radius of curvature is smallest at sharp points C.Because the electric potential is highest at sharp points D.Because air resistance is lowest at sharp points

Q15

Which two specific electrostatic phenomena are primarily utilized for the large-scale accumulation of charge in a Van de Graaff generator?

A.Dielectric breakdown and Joule heating B.Electrostatic induction and action of points C.Coulomb repulsion and Magnetic torque D.Dipole polarization and Ohmic conduction

More for this chapter

About this Electrostatics test

This free online practice test covers Electrostatics from the 12th Standard Physics (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

More chapters in Physics

View all