Question

(Va+Vb) (Va-Vb) is
a) a + b b) a - b c) 2Va
d) 2Vb​

Answer 1

Answer:

Correct option is

A

+ 9 V

Given : I=2 A

Using Kirchhoff's law V

A

−I(2)−3−I(1)−V

B

=0

∴ V

A

−2×2−3−2×1−V

B

=0

OR V

A

−9−V

B

=0

⟹V

A

−V

B

=+9 V

Answer 2

Answer:

C) 2Va

Step-by-step explanation:

+Vb and -Vb will be cancelled and when we multiply Va from Va answer will be 2Va