Ohm's Law and Circuits Quiz

If an insulated wire rubbed through a part of the insulation and the wire conductor touched the steel body of a vehicle, the type of failure would be called ________.

• A short-to-voltage

• A short-to-ground

• An open

• A chassis ground

If two insulated wires were to melt together where the copper conductors touched each other, the type of failure would be called ___________.

• A short-to-voltage

• A short-to-ground

• An open

• A floating ground

If 12 volts are being applied to a resistance of 3 ohms, _______ amperes will flow.

• 4 amperes
• 6 amperes
• 2 amperes
• 10 amperes

How many watts are consumed by a light bulb if 1.2 amperes are measured when 12 volts are applied?

• 14.4 watts
• 10.8 watts
• 16.2 watts
• 8.4 watts

How many watts are consumed by a starter motor if it draws 150 amperes at 10 volts?

• 1500 watts
• 500 watts
• 2000 watts
• 1000 watts

If a conductor breaks, this type of fault is called a(an)________?

• short circuit
• closed circuit
• open circuit
• parallel circuit

An electrical connector becomes corroded. Technician A says that the current flow (amperes) will increase in the circuit. Technician B says that the resistance in the circuit will be less than the resistance of the original. Which technician is correct?

• Both technicians are correct
• Technician B
• Technician A
• The current flow will decrease

If 200 amperes flow from the positive terminal of a battery and operate the starter motor, how many amperes will flow back to the negative terminal of the battery?

• 200 amperes
• 500 amperes
• 0 amperes
• 100 amperes

What is the symbol for voltage used in calculations?

• V

• E

• EMF

• I

Which circuit failure is most likely to cause the fuse to blow?

• Open

• Short-to-ground

• Short-to voltage

• High resistance