JEE Main 2021 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 4 August 2021, Shift 2, Physics Q28

Question 28 of 90 in this shift, Physics question 28 of 30, Section B.

The voltage between the plates of a capacitor of capacitance

5\mu\mathrm{F}

is changing at a rate of

8\times10^2\,\frac{\mathrm{V}}{\mathrm{s}}

. The displacement current is __________ mA.

Official answer

NTA final key.

Chapter: Electromagnetic Waves
Topic: Parallel Plate Capacitors
Idea tested: Displacement Current Between Plates

Same idea in other shifts

Asked 7× in all

5 Apr 2026, Shift 1 · Q37A displacement current of 4.0 A can be set up in the space between two parallel plates of $6\ \mu$ F capacitor. The rate of change of…EasySingle correct
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5 Apr 2024, Shift 1 · Q45An alternating voltage of amplitude 40 V and frequency 4 kHz is applied directly across the capacitor of $12\ \mu\mathrm{F}$ . The maximum…EasySingle correct
1 Feb 2024, Shift 1 · Q44A parallel plate capacitor has a capacitance C = 200 pF. It is connected to 230 V ac supply with an angular frequency 300 rad/s. The rms…MediumSingle correct
29 Jun 2022, Shift 2 · Q56The displacement current of 4.425 $\mu A$ is developed in the space between the plates of parallel plate capacitor when voltage is…MediumNumerical value
17 Mar 2021, Shift 2 · Q25Seawater at a frequency $f=9\times10^{2}$ Hz, has permittivity $\varepsilon=80\varepsilon_0$ and resistivity $\rho=0.25\ \Omega$ m. Imagine…HardNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.