Electrical 101 final

Which of the following terms best describes the electrical pressure that causes current to flow in a circuit?

• Resistance

• Amperage

• Voltage

• Current

Technician A says that Ohm's Law predicts that a conductor's resistance increases when amperage increases. Technician B says that Joule's Law predicts a small amount of resistance in a circuit becomes much greater when amperage increases. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Technician A says AC circuits are used in virtually all chassis circuits because a battery can easily store and supply AC current. Technician B says DC current is used to power hybrid drive electric motors. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Technician A says there are two theories of current flow: the electron theory and the conventional theory. Technician B says it is only important to remember that current flow is described by both concepts. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Which of the following electrical terms is most closely associated with 'electrical friction'?

• Amperage

• Current

• Voltage

• Resistance

Technician A says that the polarity of an electromagnet cannot be changed. Technician B says that the polarity of an electromagnet can be changed by reversing the polarity of current flow. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Alternators and generators both operate under what principle?

• Electrolysis

• Electromagnetic induction

• Photovoltaic effect

• Piezoelectric effect

An important fact to remember about electromagnetic induction is that the strength of the magnetic field changes induces __________.

• Voltage
• Resistance

• Current

• Watts

Technician A states that a battery can fail gradually due to sulfation on the plates. Technician B claims that a battery can fail gradually due to the loss of electrolyte. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Technician A says to always coat battery terminals with chassis grease to prevent corrosion. Technician B says that dielectric-type grease should be used instead because some types of chassis grease are electrically conductive. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B