Parallel Ciruits Flashcards
Two bulbs are connected in parallel to a 12 battery. One bulb has a resistance of 6 ohms and the other bulb has a resistance of 2 ohms. Technician A say that only the 2ohm bulb will light because all of the current will flow through the path with the least resistance and no current will flow through the 6 ohm bulb. Technician B says that the 6 ohm bulb will be dimmer than the 2 ohm bulb. Which technician is correct.
Technician B
Calculate the total resistance and current in a 12 volt parallel circuit with three resistors of 4 ohms, 8 ohms, and 16ohms, using any one of the five methods. What are the values?
- 3ohms
5. 3 amps
If an accessory such as an additional light is spliced into an existing circuit in parallel what happens?
The current increases in the circuit
A six cylinder engine uses six fuel injectors connected electrically into groups of three injectors in parallel. What would be the resistance of three 12 ohm injectors were connected in parallel?
4ohms
A vehicle has four tail light bulbs all connected in parallel. If one bulb burns out the current flow in the circuit ________.
Decreases because only three bulbs are operating
Two identical bulbs are connected to a 12 V battery in parallel. The voltage drop across the first bulb is 12 volts as measured with a voltmeter. What is the voltage drop across to the other bulb?
12 volts
Three resistors are connected to a 12 V battery in parallel. Current flow through each resistor is fort amps. What is the value of the resistors?
Three ohms
Two bulbs are connected to a 12 V battery in parallel. Another bulb is added in parallel. Technician A says that the third bulb will be dimmer than the other two bulbs due to reduced current flow through the filament of the bulb. Technician B says that the amount of current flowing from the battery will decrease due to the extra load. Which technician is correct?
Neither
A vehicle has four parking lights all connected in parallel and one of the bulbs burned out. Technician A says that this would cause parking light circuit fuse to blow. Technician B says that it would decrease the current in the circuit. Which technician is correct?
Technician B
Three resistors are connected in parallel to a 12 V battery. The total current flow from the battery is 12 Amps. The first resistor is three ohms and the second resistor is 6 ohms. What is the value of the third resister?
2ohms
