Correct answer: 136 V. Solution: R total = R 1 + R 2 = 18 ohms + 50 ohms = 68 ohms, Now V = I*R total = 2A * 68 ohms = 136 V. A parallel circuit involves the configuration in which two resistors have their heads joined at

Node A: 1000V to Node B: 0V, across a 100 ohm resistor. Solution: In this first practice problem, we establish the voltage drop across the resistor and setup the equation. Node A is 1000 volts and Node B is 0 volts, so we can