Current, Voltage and Resistance

Where in an electric circuit do you find electrons?

• In the lightbulb only

• In the battery only

• Moving from the battery, through the wires to each component and back to the battery

Why do we use a marble run analogy to help understand what is happening in an electric circuit?

• It is big enough we can see what is going on

• There are lots of bright colours

• We are in lockdown

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

What represents electrons in a marble run?

• The person pushing the marbles

• The marbles

• The tubes

What is the voltage in an electric circuit?

• The power of the electrons

• The charge of the electrons

• The energy of the electrons

Where does the current get its voltage from?

• The lightbulb

• The battery

• The wires

What component of the marble run represents the battery?

• Person pushing marble down the run

• Person watching the marble run

• Speed of the marble

What components causes resistance in an electric circuit?

• Light bulb

• Wires

• Heater

• Battery

Tags

NGSS.HS-PS2-4

What is resistance in an electric circuit?

• Using up of power of current

• Using up of currents energy

• Slowing down of electrons

What is the role of an ammeter in an electric circuit?

• To measure the amount of electric current in the circuit

• To measure the amount of voltage in an electric circuit

• To measure the amount of resistance in an electric circuit