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Topic: Kirchhoff's laws and applications· Current Electricity

The magnitude and direction of the current in the following circuit is

The magnitude and direction of the current in the following circuit is

loop ABCD with 2 ohm, cells 10 V and 5 V (E between), 1 ohm, 7 ohm

1. 1.5 A from \(B\) to \(A\) through \(E\)

2. 0.2 A from \(B\) to \(A\) through \(E\)

3. 0.5 A from \(A\) to \(B\) through \(E\)

4. \(\frac{5}{9}\) A from \(A\) to \(B\) through \(E\)

1 answer

Best answer

Answer: 3. 0.5 A from \(A\) to \(B\) through \(E\)

In the loop the two cells oppose each other (10 V and 5 V), so the net emf is \(10-5=5\) V. The 10 V cell is stronger and decides the direction.

  1. Total resistance: \(2+1+7=10\,\Omega\).
  2. \(I=\dfrac{5}{10}=0.5\) A.

Current flows with the stronger cell, from A to B through E. The answer is 0.5 A from A to B through E.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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