Class 12 · Practice

Electrostatic Potential & Capacitance — Previous-Year Questions

5 curated PYQs across 5 topics, drawn from JEE Mains, JEE Advanced, NEET UG, and CUET papers. Every question has a worked-out explanation.

Foundation

Potential due to Point Charge

V = kq/r. Drag a probe and read live potential with full heatmap.

Sim

Q1. Potential at a point r from +q is V. At distance 2r from same charge:

JEE 2020
All 1 PYQs for this topic →Notes →
Advanced

Potential of Dipole

V = (kp cosθ)/r². Zero on equatorial plane, max on axis.

Sim

Q1. Potential at any point on equatorial plane of a dipole is:

JEE 2019
All 1 PYQs for this topic →Notes →
Foundation

Parallel-Plate Capacitor

C = ε₀A/d. Animated dots show field. Live Q, E, U.

Sim

Q1. If d is doubled and A halved on a parallel-plate capacitor, new C is:

JEE 2021
All 1 PYQs for this topic →Notes →
Moderate

Energy Stored in Capacitor

U = ½CV². Visualized as triangular area under Q-V curve.

Sim

Q1. A capacitor has Q charge and V across it. Energy stored is:

JEE 2020
All 1 PYQs for this topic →Notes →
Advanced

Battery Removal Case

Insert dielectric with battery on/off — different physics. Compare side-by-side.

Sim

Q1. Battery is disconnected from a charged capacitor. Then a dielectric (κ) is inserted. The voltage across the cap:

JEE 2018
All 1 PYQs for this topic →Notes →
Notes for Electrostatic Potential & Capacitance →Run the simulations →All Class 12 chapters →

Electrostatic Potential & Capacitance previous-year questions on sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs). Free physics practice for Class 12, JEE Mains, JEE Advanced, NEET UG, AP Physics, SAT, and CUET-UG candidates.