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This is a problem I had for homework. I want to make sure I did it correctly.

http://i90.photobucket.com/albums/k256/dedra73/circuit-2.jpg

(a) Determine the magnitude of the current in the circuit and

I = (30-10)V / (27+5+8+12)Ω

=20V/52Ω

=.3846A

(b) The magnitude of the voltage between the points labeled A and B.

Vab = 30V - .3846A * 27Ω

= 30V- 10.3842V

= +19.6158V

(c) State which point, A or B, is at the higher potential.

Point B is 19.6158V higher than A

http://i90.photobucket.com/albums/k256/dedra73/circuit-2.jpg

(a) Determine the magnitude of the current in the circuit and

I = (30-10)V / (27+5+8+12)Ω

=20V/52Ω

=.3846A

(b) The magnitude of the voltage between the points labeled A and B.

Vab = 30V - .3846A * 27Ω

= 30V- 10.3842V

= +19.6158V

(c) State which point, A or B, is at the higher potential.

Point B is 19.6158V higher than A

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