AUTOMOTIVE ELECTRICAL EXAM QUESTIONS AND ANSWERS 100% PASS

AUTOMOTIVE ELECTRICAL EXAM QUESTIONS AND ANSWERS 100% PASS What is the name of the formula E = I x R? - omh's law What is the current in a 12-volt circuit with a 6-ohm resistor connected series? - 2 amps The unit for measuring electrical current is _____. - amperes The unit for measuring electrical resistance is _____. - ohms The unit for measuring electrical pressure (force) is _____. - volts Which of the following is a source of energy in an automobile's electrical system? - both A and B In the formula E = I x R, the E represents _____. - voltage In the formula E = I x R, the I represents_____. - current In the formula E = I x R, the R represents_____. - resistance 2Disclaimer: Original Content, No Copyright Infringement, All Rights Reserved © 2025 Technician A says moving magnetic fields are a source of electrical energy in an automobile. Technician B says chemical reaction is the only source of electrical energy in an automobile. Who is correct? - A only 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? - neither A or B Technician A says the amount of electricity produced by an AC generator depends on the strength of the magnetic field. Technician B says it depends on the speed at which the magnetic field moves past the wires. Who is correct? - both A and B Technician A says the conventional theory of current flow states that current flows from negative to positive. Technician B says the electron current flow theory states that electrons move from negative to positive. Who is correct? - B only All the following parts are used as circuit protection EXCEPT: - relay A _____ is an electromagnet with a movable core that converts electrical current into mechanical movement. - solenoid Wire sizes are being discussed. Technician A says an AWG 20 gauge wire is larger than an AWG 22 gauge wire. Technician B says a metric 1.0 gauge wire is smaller than a metric .8 gauge wire. - A only 3Disclaimer: Original Content, No Copyright Infringement, All Rights Reserved © 2025 Which of the statements concerning parallel circuits is NOT true? - The combined voltage drop of all the legs equals the total voltage drop Which statement concerning series circuits is NOT true? - The total resistance is equal to the lowest resistance in the circuit 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? - neither A nor B Technician A uses a voltmeter to check circuit resistance. Technician B uses an ohmmeter to check circuit resistance. Who is correct? - both A and B Resistance checks are being discussed. Technician A says the component must be disconnected from the system before checking. Technician B says an infinite reading means the component is shorted. Who is correct? - A only Voltage drop testing is being discussed. Technician A connects the red voltmeter lead to the most positive side of the circuit being tested and the black lead to the most negative side or part of the circuit being tested. Technician B says the test must be conducted with the circuit operating with normal amounts of current. Who is correct? - both A and B 4Disclaimer: Original Content, No Copyright Infringement, All Rights Reserved © 2025 When testing resistance in a circuit with an ohmmeter, _____. - the circuit or component must first be disconnected from the power source, then the ohmmeter is connected in parallel with the component being tested Technician A says electrical circuit resistance causes voltage drop. Technician B says high-resistance problems cause an increase in current flow. Who is correct? - A only Technician A says fuses and other circuit protection devices normally wear out. Technician B says to avoid future problems, replace a bad fuse with a higher ampere- rated fuse. Who is correct? - neither A nor B The function of a resistor in an electrical circuit is to limit _____. - current (amperes) A momentary contact switch is used to operate the _____. - horn The wiring harness for the SRS (air bag) circuit has a _____ harn