NEET UG · Physics

Electrostatics, Electric Charges and Capacitance

20 practice questions, each with the answer and an explanation.

Practise Electrostatics, Electric Charges and Capacitance now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 20 questions

  1. Two identical point charges +q are fixed at a distance 2a apart. A third charge -q is placed at the midpoint between them. If the middle charge is slightly displaced by a small distance x along the li…
  2. How does the electric field magnitude at a distance r along the axial line (Eaxial) of a short electric dipole compare to the electric field magnitude at the same distance along its equatorial line (E…
  3. An electric dipole of dipole moment p is placed in a uniform electric field of magnitude E. What is the work done by an external agent to rotate the dipole from its stable equilibrium orientation (θ =…
  4. According to Gauss's Law, what is the electric field magnitude at a distance r from an infinitely large, thin, non-conducting plane sheet having a uniform surface charge density σ?
  5. A hollow, thin spherical conducting shell of radius R carries a total positive charge Q distributed uniformly over its surface. What is the electric field (E) and electrostatic potential (V) at an int…
  6. What is the electrostatic work done in moving a test charge q0 from one point to another on the equatorial plane of an electric dipole?
  7. A parallel plate capacitor with air between its plates has capacitance C0. It is charged to a potential difference V0 by a battery. The battery is then DISCONNECTED, and a dielectric slab of dielectri…
  8. Three identical capacitors, each of capacitance C = 6 μF, are connected in series. What is the equivalent capacitance of the combination?
  9. What is the formula for the electrostatic energy density (energy per unit volume, uE) stored in the electric field between the plates of a parallel plate capacitor?
  10. A capacitor of capacitance C1 charged to potential V1 is connected in parallel with an uncharged capacitor of capacitance C2. What is the loss of electrostatic energy (ΔU) dissipated as heat during th…
  11. What is the electric capacitance of an isolated conducting spherical globe having radius R = 6400 km (the radius of planet Earth)?
  12. What is the attractive electrostatic force of attraction (F) between the two oppositely charged plates of a parallel plate capacitor carrying charge +Q and -Q, having plate area A?
  13. Why is it completely safe to remain inside a closed metal car during a severe lightning thunderstorm?
  14. What is the electric potential (V) at the center of an electric dipole composed of charges +q and -q separated by a distance 2a?
  15. If the electric flux entering and leaving an enclosed Gaussian surface are Φ1 and Φ2 respectively, what is the net electric charge enclosed inside the surface?
  16. An electric dipole consists of charges ±2.0 μC separated by a distance of 3.0 cm. It is placed in a uniform electric field of 2.0 * 10^5 N/C at an angle of 30° to the field lines. What is the magnitud…
  17. How does the capacitance of a parallel plate capacitor change if the separation distance between the plates is halved (d' = d/2) while a dielectric slab of dielectric constant K = 3 is inserted to fil…
  18. What is the electric field magnitude at a point inside a uniformly charged non-conducting solid dielectric sphere of radius R carrying total charge Q at distance r from the center (where r < R)?
  19. What is the electrostatic potential energy of a system of three identical point charges +q situated at the vertices of an equilateral triangle of side length L?
  20. What is the physical principle underlying the electrostatic shielding used to protect sensitive electronic measuring instruments from external stray electrical fields?

Keep practising

More NEET UG topics

All NEET UG practice →

Ready for the full NEET UG test?

Take a mock testNEET UG hub
Electrostatics, Electric Charges and Capacitance | GetMyMockTest