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Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity3 Marks
Question
  1. Calculate the equivalent resistance of the given electrical network between points A and B.
  2. Also calculate the current through CD and ACB, if a 10 V d.c. source is connected between A and B, and the value of R is assumed as 2 Ω.

✓

Answer

  1. Circuit:

Calculation of $\frac{1}{\text{R}_{AB}} = \frac{1}{2\text{R}} + \frac{1}{2\text{R}}\text{ or }\text{R}_{AB} = \text{R}$

  1. Current through CD = 0

Current through ACB = $\frac{10\text{V}}{4\Omega} = 2.5\text{A}.$

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