Free physics question bank
RC circuit questions with solutions
Practice Capacitor for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–10 of 21 questions
- IntegermediumCapacitor
An 8 μF capacitor is connected across the 10 Ω resistor in a series circuit containing 10 Ω and 15 Ω resistors with a 5 V DC source. Find the steady-state charge on the capacitor. (The source paper prints the charge unit as μF.)
JEE Mains 2025 23 Jan Evening Shift
Open question & full solution → - Multi-correctdifficultCapacitor
Consider the circuit shown in the figure. The switch has been in position 1 for a long time. Answer following questions:
(a) Find current through 2R.
(b) Find potential difference across the capacitor.
(c) At t = 0 the switch is moved to position 2. What current flows through the capacitor immediately after the switch is placed to position 2?
(d) Draw a graph of current Vs time for the current through the capacitor after the switch is moved to position 2. Indicate the time on the graph when the current becomes 37% of its value immediately after the switch is put to position 2
Select all that apply
Current Electricity Objective Conversion
Open question & full solution → - MCQeasyCapacitor
During charging of a 2.5 μF capacitor in a DC circuit, the displacement current is 0.25 mA. Find the rate of change of capacitor voltage dV/dt.
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JEE Mains 2025 23 Jan Evening Shift
Open question & full solution → - Multi-correctmediumCapacitor
A parallel plate capacitor has plate area A and separation between the plates equal to d. A material of dielectric constant K and resistivity ρ is filled between the plates. The switch is closed to connect the capacitor to a cell of emf V.
(a) Write the steady state current in the circuit and charge on the capacitor.
(b) When the circuit is in steady state, switch S is opened (at t = 0). Write charge on the capacitor as function of time (t) after this.
Select all that apply
Current Electricity Objective Conversion
Open question & full solution → - IntegermediumCapacitor
In the shown circuit, the energy stored in the 6 μF capacitor is n μJ. Find n.
13 April 2023 Evening Shift
Open question & full solution → - MCQeasyCapacitor
In the resistor-capacitor network shown in the original question figure, find the steady-state current I supplied by source V. Every resistor has resistance R.
Options
JEE Mains 2025 22 Jan Evening Shift
Open question & full solution → - NumericmediumCapacitor
In an electrical circuit drawn below the amount of charge stored in the capacitor is ____ μC.
JEE Mains 2024 01 Feb Evening Shift
Open question & full solution → - MCQmediumCapacitor
A capacitor having initial charge q₀ and capacitance C is connected to a variable resistance R. The resistance R can have values ranging from 0 to R₀. How should we vary R with time (t) such that the discharging current remains constant with time?
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Current Electricity Objective Conversion
Open question & full solution → - MCQeasyCapacitor
When the applied potential difference across a circuit element is increased linearly with time as shown in the second figure, the current in the circuit remains constant with time as shown in the first Figure. At t = 4 s the lead wire connecting the element to the source breaks. What will be the voltage across the element after t = 4 s? Can you identify the element?
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Current Electricity Objective Conversion
Open question & full solution → - NumericmediumCapacitor
In the given figure, the charge stored in 6μF capacitor, when points A and B are joined by a connecting wire is _______μC.
JEE Mains 2024 29 Jan Evening Shift
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