Automotive Electronics Review

Automotive Electronics Review

Auto Occupations

During this lesson, we will...

- Review types of circuits

- Review Volts, Ohms, and Amps

- Review Ohms Law Calculations

- Review automotive wiring diagrams

- Review circuit power flow

- Review circuit faults

Answer the following question using this image.

Multiple Choice

What type of circuit is this?

• Series

• Parallel

• Series-Parallel

Answer the following question using this image.

Multiple Choice

What type of circuit is this?

• Series

• Parallel

• Series Parallel

Answer the following question using this image.

Multiple Choice

What type of circuit is this?

• Series

• Parallel

• Serie Parallel

Remember a series circuit only has one path from power to ground.

- Total Resistance = The sum of all resistors

- Amperage is the same everywhere on the circuit.

Parallel Circuits

• Multiple Paths from power to ground

• At least one load on each branch

• Amperage is different for each branch depending on resistance per branch.

Series-Parallel Circuits

- Combination of a series circuit and parallel circuit.

- Complex circuit

- At least one load in series that affects multiple branches

Fill in the Blank

An automotive battery generates how many volts?

Multiple Choice

This electrical term is also referred to as the flow of electricity.

• Amperage

• Resistance

• Voltage

• Wattage

Multiple Choice

This electrical term is the opposition to the electrical flow.

• Resistance

• Amperage

• Voltage

• Watts

Ohms Law

• Voltage = Resistance X Amperage

• Resistance = Voltage / Amperage

• Amperage = Voltage / Resistance

Multiple Choice

If resistance decreases on a series circuit will amperage increase or decrease?

• Increase

• Decrease

Multiple Choice

If voltage increase on a series circuit will amperage increase or decrease?

• Increase

• Decrease

Multiple Choice

Solve for resistance. A headlight circuit uses a 12v battery and draws/flows 6A of current when in use. What is the resistance of the horn?

• 36 Ohms

• 2 Ohms

• .5 Ohms

• 2k Ohms

Multiple Choice

When amperage becomes too high on a circuit what part protects the circuit?

• Relay

• Battery

• Fuse

• Light

Multiple Choice

On a car, the negative battery terminal is connected to the?

• The frame

• The tires

• The fuse box

• Earth

Multiple Choice

Which of the following circuit faults will cause a fuse to blow?

• Open

• Short to Power

• Short to Ground

• High Resistance

Multiple Choice

An open circuit is when a wire is cut or a connection is lost between two components. True or False

• True

• False