Question: (a) Determine the potential difference ?V ab for the circuit in figure. Note that each battery has an internal resistance as indicated in the figure.

(a) Determine the potential difference ?Vab for the circuit in figure. Note that each battery has an internal resistance as indicated in the figure.

(b) If points a and b are connected by a 7.0-? resistor, what is the current in this resistor?

E- 18 V r = 2.0 0 8.0 N E= 12 y

E- 18 V r = 2.0 0 8.0 N E= 12 y 3.0n T = 5.0 0 3.0 . 6.0 0 E = 36 V T = 4.0 N 1.0

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