NEET Physics / AI question bank / NCERT Class 12 / Electrostatics
Electrostatic Potential and Capacitance: NEET questions with solutions
NEET tests potential as a signed scalar sum, work done between two points, potential energy of charge systems and of a dipole in a field, the electrostatics of conductors, and capacitors: dielectrics, series-parallel networks, stored energy and charge sharing. Marks are lost by dropping signs, by treating potential as a vector, and by forgetting which quantity stays fixed once the battery is removed.
Also called: capacitors · capacitance · electric potential
Questions
10 questions / answers after you pick
- Q1Point charges of +4 nC and −6 nC are fixed 20 cm apart in air. What is the electric potential at the midpoint of the line joining them? (k =…
Potential due to a system of chargesEasySingle correct
- Q2A charge of +3 μC is moved slowly (no change in kinetic energy) from a point A at a potential of 20 V to a point B at a potential of 80 V.…
Electrostatic potentialEasySingle correct
- Q3A charged metal body is in electrostatic equilibrium. Which of the following statements about it are correct?
Electrostatics of conductorsMediumStatement based
- Q4Charges of +1 μC, +2 μC and −3 μC are placed at the corners of an equilateral triangle of side 30 cm in air. What is the electrostatic…
Potential energy of a system of chargesMediumSingle correct
- Q5A parallel plate capacitor is charged by a battery to charge Q₀ and stored energy U₀. The battery is then disconnected, and a slab of…
Effect of dielectric on capacitanceMediumSingle correct
- Q6Capacitors of 2 μF and 3 μF are connected in parallel, and this pair is connected in series with a 5 μF capacitor. The combination is…
Combination of capacitorsMediumSingle correct
- Q7A 4 μF capacitor charged to 50 V is disconnected from its supply and connected across an uncharged 6 μF capacitor (positive plate to one…
Energy stored in a capacitorHardSingle correct
- Q8A small test charge is carried around a circle centred on an isolated point charge. Read the Assertion (A) and Reason (R) about this and…
Equipotential surfacesMediumAssertion–Reason
- Q9An electric dipole of moment 4.0 × 10⁻⁹ C m is in stable equilibrium in a uniform field of 2.0 × 10⁵ N C⁻¹. How much work must an external…
Potential energy in an external fieldHardSingle correct
- Q10Match each quantity in List I with how it depends on the distance r from the source in List II (for the dipole, r is much larger than its…
Potential due to a dipoleEasyMatch the following
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