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Friday, 9 October

JEE Main 2021 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 18 March 2021, Shift 1, Physics Q26

Question 26 of 90 in this shift, Physics question 26 of 30, Section B.

The circuit shown in the figure consists of a charged capacitor of capacity 3 μ\muF and a charge of 30 μ\muC. At time t=0t=0, when the key is closed, the value of current flowing through the 5 MΩ\Omega resistor is 'xx' μ\muA. The value of 'xx' to the nearest integer is __________.

The figure, in words

Series loop: capacitor C = 3 uF carrying charge q = 30 uC, a 5 M ohm resistor, and a switch (key).

Official answer

2

NTA final key.

Chapter
Electromagnetic Induction
Topic
RC Circuits
Idea tested
Initial Rate of Charging

Same topic in other shifts

All RC Circuits questions
  1. 5 Apr 2026, Shift 2 · Q37Under steady state condition the potential difference across the capacitor in the circuit is __________ V.MediumSingle correctHas a figure
  2. 9 Jan 2020, Shift 2 · Q12Two identical capacitors A and B, charged to the same potential 5V are connected in two different circuits as shown below at time t=0t=0.…MediumSingle correctHas a figure
  3. 2 Apr 2017 (offline) · Q16In the given circuit diagram when the current reaches steady state in the circuit, the charge on the capacitor of capacitance C will be :EasySingle correctHas a figure

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.