SB1 L088 Potential Difference Video Questions

What is special about some of the electrons in metals?

• They cannot move

• They are free to move

What do free electrons carry around a circuit?

• Energy

• Ammeter

• Voltmeter

• Protons

Where do the free electrons get their energy from in a circuit?

• Electrons

• Friction

• Battery/Cell

• Protons

Where does the energy carried by the electrons go in a circuit?

• Back to the battery

• To the bulbs

What does the ammeter measure?

• Voltage
• Resistance
• Power
• Current

What does the voltmeter measure?

• Voltage
• Power
• Resistance
• Current

What is the difference where the ammeter and voltmeter is placed in the circuit?

• Ammeters are placed in series and voltmeters are placed in parallel.

• Ammeters are placed in parallel and voltmeter are placed in series.

What is another name for voltage?

• Current flow
• Resistance
• Power factor
• Potential difference