Electric Current, Voltage, and Resistance Quiz

What is electric current measured in?

• Amperes

• Coulombs

• Ohms

• Volts

What device is used to measure current?

• Ohmmeter

• Resistor

• Ammeter

• Voltmeter

What is the formula to calculate current?

• i = Q / t

• i = R / V

• i = Q × t

• i = V / R

What does voltage measure?

• Flow of charge

• Pressure behind current

• Energy consumed

• Resistance

What is the unit of voltage?

• Ohms

• Volts

• Amperes

• Coulombs

What is resistance measured in?

• Volts

• Coulombs

• Amperes

• Ohms

What happens to the wire when resistance increases?

• It becomes a conductor

• It loses charge

• It heats up

• It cools down

What is Ohm's Law?

• V = i × R

• i = V × R

• R = V / i

• i = R / V

If the current is 4.8 A and the time is 45 s, how much charge passes through?

• 180 C

• 216 C

• 300 C

• 240 C

What is the relationship between current, voltage, and resistance?

• None of the above

• Inversely proportional

• Directly proportional

• Independent