8a. You have two resistors in series, when you add another resistor. The resistance goes __ and current goes __ 8b. You have two resistors in parallel, when you add another resistor. The resistance goes __ and current goes __

8a. When you have two resistors in series and you add another resistor, the total resistance of the circuit increases. This is because the resistors are added in a series configuration, and the total resistance is the sum of the individual resistances. As a result, the current in the circuit decreases, according to Ohm's law (V = IR), where V is the voltage, I is the current, and R is the resistance.<br /><br />8b. When you have two resistors in parallel and you add another resistor, the total resistance of the circuit decreases. This is because the resistors are added in a parallel configuration, and the total resistance is given by the reciprocal of the sum of the reciprocals of the individual resistances. As the total resistance decreases, the current in the circuit increases, according to Ohm's law.