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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceDiagram basedEasyMulti-step

JEE Main 30 January 2024, Shift 1, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

Primary coil of a transformer is connected to 220 V ac. Primary and secondary turns of the transforms are 100 and 10 respectively. Secondary coil of transformer is connected to two series resistances shown in figure. The output voltage (V0V_0) is :

The figure, in words

Transformer: 220 V ac source on primary; secondary connected to a 15 kohm resistor in series with a 7 kohm resistor; output V0 taken across the 7 kohm resistor.
  1. (1)22 V
  2. (2)7 VOfficial answer
  3. (3)15 V
  4. (4)44 V

Official answer

Option 2

NTA final key.

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

Same idea in other shifts

Asked 4× in all
  1. 30 Jan 2024, Shift 1 · Q49A potential divider circuit is shown in figure. The output voltage V0V_0 is :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.