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LC Oscillations for JEE: 11 solved questions

Real JEE paper questions on lc oscillations, part of alternating current. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2003 to 2026. No sign-in needed to read them.

What this topic asks

• Frequency and current in LC — 6 questions
• Energy exchange and damping in LC — 5 questions

All 11 questions with solutions

• A capacitor C is fully charged to potential difference V₀, disconnected from the battery, and then connected… JEE Main 21st Jan 2nd Shift 2026
• A 100 μF capacitor is charged to 12 V and then connected to a 6.4 mH inductor to produce oscillations. The ma… JEE Main 29th Jan 1st Shift 2024
• In an LC oscillator the inductance and capacitance become twice and eight times their initial values respecti… JEE Main 25th Jan 1st Shift 2023
• An LCR circuit behaves like a damped harmonic oscillator. Comparing it with a spring-mass oscillator of dampi… JEE Main 7th Jan 1st Shift 2020
• An ideal 0.2 μF capacitor is charged to 10 V and disconnected, then connected to an ideal inductor of 0.5 mH.… JEE Main 2018
• In an LCR circuit (like a damped pendulum) a capacitor charged to Q₀ is connected to L and R. The square of t… JEE Main 2015
• A coil of self-inductance L is joined across two parallel rails; a connector of length l and mass m slides fr… AIEEE 2012
• A fully charged capacitor C (initial charge q₀) is connected to a coil of self-inductance L at t=0. The time… AIEEE 2011
• In an oscillating LC circuit the maximum charge on the capacitor is Q. The charge on the capacitor when the e… AIEEE 2003
• An oscillating LC circuit has a 75 mH inductor and a 1.2 μF capacitor. If the maximum charge on the capacitor… JEE Main 8th April 1st Shift 2023
• A 500 μF capacitor is charged fully by a 100 V d.c. supply, then connected to a 50 mH inductor to form an LC… JEE Main 29th July 2nd Shift 2022