Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- According to Ohm’s law: The potential difference across a resistor in a circuit is directly proportional to the current flowing in it.
V = R I
Where V is potential difference, R is resistance and I is current.
- Kirchhoff’s current law (KCL): It states that, the total current entering a circuit’s junction is exactly equal to the total current leaving the same junction.
EXPLANATION:
Let potential at O is V’ and all the current is originating from the point O.
According to the KCL, the sum of all the current originating from the point O will be equal to zero.
Use Ohm’s law to final total current originating from O:
Current in OA + Current in OB + Current in OC = 0
(V – 8)/2 + (V – 4)/4 + (V – 2)/2 = 0
(2 V – 16 + V – 4 + 2 V – 4)/ 4= 0
5 V – 24 = 0
Potential at O (V) = 24/5 = 4.8 VoltLast updated on Jun 13, 2025
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