Consider a circuit where the batteries have zero internal resistance and the cur

Question

Consider a circuit where the batteries have zero internal resistance and the currents are flowing in the direction indicated by the arrows.

(a) Using the direction of the arrow as positive (as shown), find the current through the 12.4 ? resistor and the 5.1 V battery at the top of the circuit. A negative current denotes flow opposite to the direction of the arrow. Answer in units of A

(b) Using the direction of the arrow as positive (as shown), find the current through the 20.7 ? resistor in the center of the circuit. Answer in units of A

Explanation / Answer

  I2 is 11.4 volts / 20.7 ohms, negative. Add 11.4 v to 5.1 v then divide by 12.4 ohms to get i1.

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