Chapter 6 Electricity

What unit is used to measure voltage?

• Ohms

• Volts

• Amps

What unit is used to measure resistance?

• Ohms

• Volts

• Amps

Which is the right form of Ohm's Law?

• V=I/R

• I=V/R

• I=R/V

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

• 12 V

• 4/3 V

• 3/4 V

What is current?

• the amount of push the electrical source supplies to the circuit

• how much a given device resists the flow of electric current

• flow of electric charge

What is resistance?

• the amount of push the electrical source supplies to the circuit

• how much a given device resists the flow of electric current

• flow of electric charge

When more branches are added to a parallel circuit, ____________________.

• resistance decreases
• voltage increases
• nothing changes

What is resistance

• repelling against something

• the measure of how difficult current to flow

• how long the wire is

Will the light bulbs light up in this image?

• Yes, both of them will

• No, neither of them will

• Yes, but only the one on the left

Tags

NGSS.4-PS3-2

What makes up an electric circuit?

• Bulb and battery

• Bulb, battery and switch

• Bulb, battery and wire