Class 12 · Practice

Current Electricity — Previous-Year Questions

3 curated PYQs across 3 topics, drawn from JEE Mains, JEE Advanced, NEET UG, and CUET papers. Every question has a worked-out explanation.

Moderate

R = ρL/A

Wire stretches/thins live; resistance updates accordingly.

Sim

Q1. A wire of resistance R is stretched to double its length. New resistance is:

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

Wheatstone Bridge

Balance condition P/Q = R/S. Galvanometer reads zero when balanced.

Sim

Q1. Wheatstone bridge is balanced when:

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

Internal Resistance & V_terminal

V = ε − Ir. As R drops, more voltage is wasted across r.

Sim

Q1. A cell of emf 6 V has internal resistance 1 Ω. Terminal voltage when delivering 2 A is:

JEE 2021
All 1 PYQs for this topic →Notes →
Notes for Current Electricity →Run the simulations →All Class 12 chapters →

Current Electricity 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.