Automotive Electronics Practice Test Questions and Correct Answers

Automotive Electronics Practice Test Questions and Correct Answers A series circuit has three resistors of 4 ohms each. The voltage drop across each resistor is 4 volts. Technician A says that the source voltage is 12 volts. Technician B says that the total resistance is 18 ohms. Which technician is correct? Tech A Tech B Both Neither - Correct Answer Tech A A vehicle has four parking lights all connected in parallel and one of the bulbs burns out. Technician A says that this could cause the parking light fuse to blow (open). Technician B says that it would decrease the current in the circuit. Which technician is correct? Tech A Tech B Both Neither - Correct Answer Tech B As additional branches are added to a a parallel circuit, total circuit resistance ________. Remains the same Decreases Increases None of the above - Correct Answer Decreases Calculate the total resistance and current in a 12-volt parallel circuit with three resistors of 4 ohms, 8 ohms, and 16 ohms, using any one of the five methods (calculator suggested). What are the total resistance and current? 140 ohms (18 amps) 4 ohms (3.0 amps) 2.3 ohms (5.3 amps)