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Saturday, 31 October

JEE Main 2024 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 8 April 2024, Shift 2, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

If the net electric field at point P along Y axis is zero, then the ratio of ∣q2q3∣\left|\frac{q_2}{q_3}\right| is 85x\frac{8}{5\sqrt{x}}, where x=x = ____________.

The figure, in words

Point P at the top; a vertical line of 4 cm from P down to the base line (right-angle mark); on the base, charge +q2+q_2 at left 2 cm from the foot of the perpendicular and −q3-q_3 at right 3 cm from the foot; dashed lines join P to each charge.

Official answer

5

NTA final key.

Chapter
Electric Charges and Fields
Topic
Electric Field
Idea tested
Superposition Principle for Electric Fields

Same idea in other shifts

Asked 6× in all
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  2. 28 Jun 2022, Shift 1 · Q38Given below are two statements : Statement-I : A point charge is brought in an electric field. The value of electric field at a point near…MediumTwo statements
  3. 28 Jun 2022, Shift 1 · Q39The three charges q/2, q and q/2 are placed at the corners A, B and C of a square of side 'a' as shown in figure. The magnitude of…MediumSingle correctHas a figure
  4. 28 Jun 2022, Shift 2 · Q40Two point charges A and B of magnitude +8×10−6+8\times10^{-6} C and −8×10−6-8\times10^{-6} C respectively are placed at a distance d apart. The…EasySingle correct
  5. 8 Jan 2020, Shift 1 · Q10Three charged particles A, B and C with charges −4q-4q, 2q2q and −2q-2q are present on the circumference of a circle of radius d. The…MediumSingle 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 108 of the 174 JEE Main shifts held from 2017 to 2026.