First slide

Writing potential drop across a open line

Question

In the network shown, potential of point C is

Moderate

A

5 V
B

7.5 V
C

2.5 V
D

8 V

Solution

The network can be drawn as shown below
$R_{C} = (2 + \frac{6 \times 3}{6 + 3}) Ω = 4 Ω ∴ i = \frac{10 - 0}{4} A = \frac{5}{2} A ∴ \frac{10 - V_{C}}{2} = \frac{5}{2} \Rightarrow V_{C} = 5 volt .$

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