JEE Main 2021 · PhysicsMultiple choiceDiagram basedMediumMulti-step

JEE Main 4 August 2021, Shift 1, Physics Q15

Question 15 of 90 in this shift, Physics question 15 of 30, Section A.

A 4V battery with internal resistance 1

\Omega

and a 6V battery with 2

\Omega

internal resistance are connected to a resistor of 5

\Omega

as shown in fig. The current in the 5

\Omega

resistor is

The figure, in words

Rectangular circuit with nodes labelled E (top left), B (top middle), A (top right), F (bottom left), C (bottom middle), D (bottom right). Left arm E-F holds a battery labelled 4V with 1 ohm (as drawn, the shorter plate is on the upper side, the longer plate on the lower side). Middle arm B-C holds a 5 ohm resistor. Right arm A-D holds a battery labelled 6V with 2 ohm (as drawn, the longer plate is on the upper side, the shorter plate on the lower side). Top wire joins E, B, A; bottom wire joins F, C, D.

(1) $\frac{2}{17}$ A from B to C
(2) $\frac{1}{17}$ A from B to C
(3) $\frac{2}{17}$ A from C to BOfficial answer
(4) $\frac{1}{17}$ A from C to B

Official answer

Option 3

NTA final key.

Chapter: Current Electricity
Topic: Kirchhoff's Laws
Idea tested: Parallel Combination of Cells

JEE Main 4 August 2021, Shift 1, Physics Q15

Same idea in other shifts