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Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 28 June 2022, Shift 2, Physics Q56

Question 56 of 90 in this shift, Physics question 26 of 30, Section B.

A capacitor C1_1 of capacitance 5 µF is charged to a potential of 30 V using a battery. The battery is then removed and the charged capacitor is connected to an uncharged capacitor C2_2 of capacitance 10 µF as shown in figure. When the switch is closed charge flows between the capacitors. At equilibrium, the charge on the capacitor C2_2 is __________ µC.

The figure, in words

A single loop: capacitor C1 (labelled 5 µF) on the left branch and capacitor C2 (labelled 10 µF) on the right branch, joined by wires, with an open switch in the top wire.

Official answer

100

NTA final key.

Chapter
Electrostatic Potential and Capacitance
Topic
Electric Potential
Idea tested
Charge Sharing Between Conductors

Same topic in other shifts

All Electric Potential questions
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  2. 6 Apr 2026, Shift 2 · Q40A sphere of capacitance 100 pF is charged to a potential of 100 V. Another identical uncharged metal sphere is brought in contact with the…MediumSingle correct
  3. 2 Apr 2025, Shift 2 · Q42Two large plane parallel conducting plates are kept 10 cm apart as shown in figure. The potential difference between them is V. The…MediumDiagram basedHas a figure
  4. 3 Apr 2025, Shift 1 · Q39The electrostatic potential on the surface of uniformly charged spherical shell of radius R = 10 cm is 120 V. The potential at the centre…EasySingle correct
  5. 7 Apr 2025, Shift 1 · Q38Two charges q1q_1 and q2q_2 are separated by a distance of 30 cm. A third charge q3q_3 initially at 'C' as shown in the figure, is moved…MediumDiagram basedHas a figure
  6. 8 Apr 2025, Shift 2 · Q35Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Work done in moving a…EasyAssertion–reason

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 108 of the 174 JEE Main shifts held from 2017 to 2026.