Question:
In the part of a circuit shown in figure, determine the current through 20 $\Omega$ resistance, if Potential at 'A' is 30 V, Potential at B = Potential at C = 20 V:
figure [H]
In the part of a circuit shown in figure, determine the current through 20 $\Omega$ resistance, if Potential at 'A' is 30 V, Potential at B = Potential at C = 20 V:
figure [H]
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Current always flows from higher to lower potential.
Updated On: Jun 6, 2026
- 0.5 A
- 1.2 A
- 0.36 A
- 0.26 A
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The Correct Option is A
Solution and Explanation
Step 1: Concept
Ohm's Law $I = V/R$ for branches in parallel.
Step 2: Meaning
Current in branch = Potential difference / Resistance.
Step 3: Analysis
Current through $20~\Omega$ branch = $(V_A - V_B) / R = (30 - 20) / 20 = 10 / 20 = 0.5$ A.
Step 4: Conclusion
The current is 0.5 A.
Final Answer: (A)
Ohm's Law $I = V/R$ for branches in parallel.
Step 2: Meaning
Current in branch = Potential difference / Resistance.
Step 3: Analysis
Current through $20~\Omega$ branch = $(V_A - V_B) / R = (30 - 20) / 20 = 10 / 20 = 0.5$ A.
Step 4: Conclusion
The current is 0.5 A.
Final Answer: (A)
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