Question

What is the reading on voltmeter V1 if the reading on V2 = 9 V and V3 =3 V? a) 27 V b) 3 V c) 12 V d) 6 V

Answer 1

Answer:

V

1

and V

2

are equal and out of phase with each other and thus get cancelled. Thus V

3

=220V and i=

100

220

=2.2A

Explanation:

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Answer 2

Option “C” is correct i.e. 12 voltage.

Explanation:

V2 and V3 are given and we have to find out V1.

V1+V2+V3= 0

V1=-V2-V3

V1= -9-3

V1= 12 V

So the V1 is 12V.

• We can define voltage as the quantity of potential energy between 2 points on a circuit.  
• Unambiguously, voltage is equivalent to energy per unit charge.  

Hope it helped...