Understanding Resistance and Circuits

Which of the following materials is considered a conductor?

• Metal

• Foam

• Plastic

• Air

What is the unit of measurement for resistance?

• Ohms

• Amps

• Volts

• Watts

How do you calculate resistance using potential difference and current?

• Resistance equals current divided by potential difference

• Resistance equals potential difference plus current

• Resistance equals potential difference divided by current

• Resistance equals current times potential difference

In a series circuit, where should the ammeter be placed?

• Next to the power source

• In parallel with the component

• In the same loop as the component

• Outside the circuit

If a voltmeter reads 6 volts and an ammeter reads 2 amps, what is the resistance?

• 1 ohm

• 3 ohms

• 2 ohms

• 4 ohms