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Saturday, 31 October

JEE Main 2023 · PhysicsNumerical answerNumerical valueHardMulti-step

JEE Main 13 April 2023, Shift 1, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

In the given figure, an inductor and a resistor are connected in series with a battery of emf E volt. Ea2b\frac{E^a}{2b} J/s represents the maximum rate at which the energy is stored in the magnetic field (inductor). The numerical value of ba\frac{b}{a} will be ______________

The figure, in words

Series circuit: inductor L = 4 H and resistor R = 25 Ω connected with a battery of emf E.

Official answer

25

NTA final key.

Chapter
Electromagnetic Induction
Topic
Inductance
Idea tested
Power Distribution in a Non-Ideal Inductor

Same topic in other shifts

All Inductance questions
  1. 2 Apr 2026, Shift 2 · Q43A circular current loop of radius R is placed inside square loop of side length L (L >> R) such that they are co-planar and their centers…HardSingle correct
  2. 5 Apr 2026, Shift 1 · Q50In the given circuit below inductance values of L1L_1, L2L_2 and L3L_3 are same. The magnetic energy stored in the entire circuit is…MediumNumerical valueHas a figure
  3. 6 Apr 2026, Shift 1 · Q43An inductor of inductance 10 mH having resistance of 100 Ω\Omega is connected to battery of E.M.F. 1.0 V through a switch as shown in the…MediumSingle correctHas a figure
  4. 8 Apr 2026, Shift 2 · Q40A 30 cm long solenoid has 10 turns per cm and area of 5 cm2^2. The current through the solenoid coil varies from 2 A to 4 A in 3.14 s.…MediumSingle correct
  5. 2 Apr 2025, Shift 2 · Q43A solenoid having area AA and length ll is filled with a material having relative permeability 2. The magnetic energy stored in the…MediumSingle correct
  6. 5 Apr 2024, Shift 1 · Q44Two conducting circular loops A and B are placed in the same plane with their centres coinciding as shown in figure. The mutual inductance…MediumDiagram basedHas 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 108 of the 174 JEE Main shifts held from 2017 to 2026.