Electric Current

⚡Unit 10: Test Review Current Electricity

Fill in the Blanks

In a circuit,

move through a closed, complete loop path from LOW TO HIGH voltage.

Multiple Choice

13. The continuous flow of electric charges through a material is called ___.

• Electric Field

• Electric Current

• Electric Force

• Electric Circuit

Labeling

Label the diagram with the correct parts of a circuit.

Drag labels to their correct position on the image

Wire

Lightbulb

Battery

Resistor

Switch

🔥Length

🔥Thickness

🔥Temperature

​

Factors affecting resistance

Multiple Choice

Increasing the length of the wire will ___ resistance.

• increase

• decrease

• not affect the

Multiple Choice

Increasing the thickness of the wire will ___ resistance.

• increase

• decrease

• not affect the

Multiple Choice

Increasing the temperature of the wire will ___ resistance.

• increase

• decrease

• not affect the

Mostly non-metals, do not allow electrons to move through them freely and have high resistance.

Insulator

​Typically metals allow their electrons to move freely, and have low resistance.

​​Conductor

Multiple Select

Select all of the conductors.

• copper

• rubber

• aluminum

• sea water

• glass

Multiple Select

Select all of the insulators.

• plastic

• rubber

• aluminum

• sea water

• glass

Ohm's Law

Multiple Choice

Identify the units for Voltage

• Ohms

• Volts

• Amperes

• Watts

Multiple Choice

Identify the units for Current

• Ohms

• Volts

• Amperes

• Watts

Multiple Choice

Identify the units for Resistance

• Ohms

• Volts

• Amperes

• Watts

Multiple Choice

An easy bake oven functions at 120 Volts. 

1.  If the oven has a resistance of 100 Ohms, what is the current in the oven?

• 1.2 A

• 0.8 A

• 12,000 A

Multiple Choice

An easy bake oven functions at 120 Volts. 

1.  The oven has a resistance of 100 Ohms, what is the POWER consumed by the oven?

• 144 W

• 100 W

• 144 A

Multiple Choice

If the voltage of the battery is increased, what will happen to the current in the resistor?

• The current will increase.

• The current will decrease.

• The current will neither increase or decrease.

Multiple Choice

If the voltage of the battery is decreased, what will happen to the resistance in the resistor?

• The resistance will not change.

• The resistance will decrease.

• The resistance will increase.

💡​Which variable remains constant throughout all parts in a series circuit?
(Hint: Equal)

​​Series Formulas

​💡Which variable remains constant throughout all parts in a parallel circuit? (Hint: Equal)
💡When Calculating Resistance, take the reciprocal again as final step.

​​Parallel Formulas

Have your foldable handy

Fill in the Blanks

Find the total resistance for a series circuit with resistors of 120 ohms, 410 ohms, and 240 ohms. Include the units with your answer.

Fill in the Blanks

Find the total resistance for a parallel circuit with resistors of 120 ohms, 410 ohms, and 240 ohms. Include the units with your answer.

Multiple Choice

Identify the variable that remains constant in a series circuit.

• Current

• Voltage

• Resistance

• Power

Multiple Choice

Identify the variable that remains constant in a parallel circuit.

• Current

• Voltage

• Resistance

• Power

Fill in the Blanks

Find the total resistance for a parallel circuit with resistors of 20 ohms, 10 ohms, and 30 ohms. Include the units with your answer.

Fill in the Blanks

13. What voltage can send 2.5 A of current through a resistance of 10 ohms? 

14. Include units in your response.

Fill in the Blanks

13. A 12 V battery sends 0.45 A through a resistor. What is the value of the resistor?

14. Include units in your response.

Fill in the Blanks

13. A 1.5 volt battery is connected to a 50 ohm resistor. How much current flows through the resistor?

14. Include units in your response.

💡​Think about the lab and the circuits you created for your project to
help you determine...
💡the type of circuit.
💡if the bulbs will light up.
💡the brightness of the bulbs.

​​Series Circuit

​​Parallel Circuit

Multiple Choice

Identify the correct parallel circuit.

Multiple Choice

Identify the correct circuit.

Multiple Choice

Identify the bulb(s) that will NOT light up.

• B

• A, C

• A, B, C

• B, C

• C

Multiple Choice

Identify the bulb(s) that will NOT light up.

• B

• A, C

• A, B, C

• B, C

• C

Multiple Choice

Identify the bulb(s) that will NOT light up.

• B

• A, C

• A, B, C

• B, C

• C