Examples: 1. The circuit shown contains two batteries, each with a voltage and an internal resistance, and two resistors. Find: (a) the current in the circuit and (b) the potential difference Vab. - + I - + I I I + - I - +
Examples: 2. In the circuit shown, find: (a) the current in resistor R; (b) the resistance R; (c) the unknown voltage V and (d) if the circuit is broken at point x, what is the current in resistor R? (Ans. (a)2.00 A, (b) 5.00 , (c) 42.0 V, (d) 3.5 A ) V=? a b
Examples: 3. Find the voltages V1 and V2 in the circuit below and find the potential difference of point b relative to a. (Ans. V1=18.0 V, V2=7.00 V, Vba=-13.0V.) V1=? V2=?