Current, Voltage, and Resistors

What is voltage?

• The difference in potential energy of the charged particles
• The number of charged particles that pass a point each second
• The flow of protons
• A type of dog from Central Asia

What is current measured in?

• Volts
• Amperes (Amps)
• Ohms
• Coulombs

What is resistance measured in?

• volts
• Amperes (Amps)
• Ohms
• Coulombs

Ohm's law states that:

• V=IR
• V=I/R
• V=R/I
• V=I+R

A charging system producing 14.5 Volts with a current flow of 43.5 Amps, what is the circuit resistance?

• 58 Amps

• 0.33 Amps

• 13 Amps

• 1 Amp

If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?

• 5 V
• 12 V
• 0.2 V
• 20 V

What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts?

• 15 Ohms

• 4 Ohms

• 0.3333 Ohms

• 2 Ohms

What is the voltage in an electric circuit?

• The power of the electrons

• The charge of the electrons

• The energy of the electrons

What is the current in an electric circuit?

• The energy of the circuit

• The flow of electrons in the circuit

• The power of the circuit

The current in the wires of a circuit is 120.0 milliAmps. If the battery was replaced by one with double the voltage (with no other replacements), then its new current would be _____ milliAmps.

• 60 milliAmps

• 120 milliAmps

• 240 milliAmps

• No way to tell