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JEE PYQ: Current Electricity Question 34

Question 34 - 2020 (09 Jan 2020 Shift 1)

In the given circuit diagram, a wire is joining points B and D. The current in this wire is:

(1) 0.4 A

(2) 2 A

(3) 4 A

(4) zero

Show Answer

Answer: (2)

Solution

From circuit: $R_1 = \frac{4}{5}$, $R_2 = \frac{6}{5}$. $R_{\text{eff}} = 2,\Omega$. $i = \frac{20}{2} = 10$ A. $I_{BC} = \frac{4i}{5} - \frac{3i}{5} = \frac{i}{5} = 2$ A.


Learning Progress: Step 34 of 76 in this series