3rd lesson 8th grade

3rd lesson 8th grade

Multiple Choice

What word means how hard it is for electrons to flow through.

• Current
• Voltage
• Resistance
• Power

Multiple Choice

What resistance is needed to cause a 50A current flow because of a 500V battery?

• 10Ώ
• 5Ώ
• 2500Ώ
• 550Ώ

Multiple Choice

What voltage is needed to cause a 2A current flow through a 10Ω resistor?

• 5V
• 0.2V
• 20V
• 200V

Multiple Choice

As the diameter of a wire increases, the resistance of the wire will

• increase

• decrease

• stay the same

Multiple Choice

As the length of a wire increases, the resistance of the wire will

• increase

• decrease

• stay the same

Multiple Choice

What is the unit of measurement for resistance?

• Voltage

• Ampere

• Watts

• Ohms

Multiple Choice

What is the total resistance (RT) across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

Multiple Choice

The voltage dropped across the 300 ohm resistor is 

• 6 V
• 9 V
• 2 V
• 30 V

Multiple Choice

The current through the battery of this circuit is

• 0.02 amps
• 0.09 amps
• 50 amps
• 9 amps

Multiple Choice

The equivalent resistance in this circuit is 

• 100 ohms
• 450 ohms
• 400 ohms
• 30 ohms

Multiple Choice

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.
• The same current flows through all three light bulbs.
• It uses a single battery.
• The electrical current is divided between the three light bulbs.

Multiple Choice

This is an example of a _______ circuit

• open
• series
• parallel
• square

Multiple Choice

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut a the point shown by the arrow?

• 0

• 1

• 2

• 3

Multiple Choice

Will the light bulb in this circuit light and why/why not?

• yes, because it has two batteries
• no, because the switch is open
• yes, because it is in a circuit
• no, because the bulb is burned out

Multiple Choice

this circuit is .....?

• open
• parallel
• closed
• The cutest little circuit evah!

Multiple Choice

What kind of circuit is this?

• series
• parallel