Question

The voltage V in Figure is
(a) 10 V
(c) 5V
(b) 15 V
(d) None of the above
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Answer 1

Answer:

the answer is 10 V of this figure

Answer 2

The voltage V in the figure is (b) 15 V

We know, P = VI

P = Power

V = Voltage

I = Current

if P is constant, then V∝ 1/I

Here, current in the first branch = iₓ

         current in the second branch = 2iₓ

Voltage in the first branch = 10 V

∴ Voltage in the second branch = 10/2 = 5 V

∴ Total voltage in the circuit = (10+5) = 15 V

∴ The voltage V in the figure is 15 V.