Exam 15: Basics of Electrical Systems

What is electromagnetic induction?

All the following parts are used as circuit protection EXCEPT:

Technician A says current will decrease with a decrease in resistance. Technician B says current will increase with an increase in resistance. Who is correct?

Which of the following is a source of energy in an automobile's electrical system?

____________________ are materials that have a low resistance to the flow of current.

The chemical reaction in a battery causes a lack of electrons at the positive (+)terminal.

Technician A says when there is a complete path through the electrical circuit, the circuit is said to be open. Technician B says when the circuit path is broken or interrupted the circuit is said to be closed. Who is right?

Circuit breakers are being discussed. Technician A says after the circuit breaker is tripped, it must be reset by pressing a button on the breaker. Technician B says some circuit breakers automatically reset after the power has been turned off for a few seconds. Who is correct?

What factors affect the resistance of a copper wire?

The electrical system of a modern automobile runs at _____ volts when the engine is running.

Why is a relay used in a circuit?

The unit for measuring electrical pressure (force)is _____.

The electrical principle that states "the sum of the voltage drops in a closed circuit equals the voltage applied to that circuit" is known as _____ law.

What is the current in a 12-volt circuit with a 6-ohm resistor connected series?

Which type of resistor is commonly used in automotive circuits?