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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceDiagram basedEasyCalculation

JEE Main 30 January 2024, Shift 1, Physics Q49

Question 49 of 90 in this shift, Physics question 19 of 30, Section A.

A potential divider circuit is shown in figure. The output voltage V0V_0 is :

The figure, in words

A 4 V battery across a chain of series resistors: 3.3 kohm followed by seven 100 ohm resistors; output V0 taken between a tap after the third resistor (i.e. after 3.3 kohm and two 100 ohm resistors) and the far end of the chain.
  1. (1)12 mV
  2. (2)2 mV
  3. (3)0.5 VOfficial answer
  4. (4)4 V

Official answer

Option 3

NTA final key.

Chapter
Current Electricity
Topic
Kirchhoff's Laws
Idea tested
Voltage Divider Rule

Same idea in other shifts

Asked 4× in all
  1. 30 Jan 2024, Shift 1 · Q50Primary coil of a transformer is connected to 220 V ac. Primary and secondary turns of the transforms are 100 and 10 respectively.…EasyDiagram basedHas a figure
  2. 25 Jul 2021, Shift 2 · Q13The given potentiometer has its wire of resistance 10 Ω\Omega. When the sliding contact is in the middle of the potentiometer wire, the…MediumDiagram basedHas a figure
  3. 18 Mar 2021, Shift 1 · Q23The voltage across the 10 Ω\Omega resistor in the given circuit is xx volt. The value of 'x' to the nearest integer is __________.EasyNumerical valueHas 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.