Unit 6/7 Test Review: Static & Current Electricity

⚡Unit 6/7: Test Review Static & Current Electricity

Use your Notes.

⚡The force of attraction between charged objects is affected by the type of charge and the distance between them.

​⚡Electrostatic forces can be attractive of repulsive.

​Force
Charge Distance

Multiple Choice

What is the standard unit for charge?

• Newtons (N)

• Coulombs (C)

• Electros (e)

• Protos (P)

Multiple Choice

What does the "k" represent in Coulomb's Law?

• charge

• Coulomb's Constant

• kilometers

• distance between charges

Multiple Choice

What letter is used to denote "charge"?

• k

• q

• r

• e

Multiple Choice

Charles de Coulomb measured attractive and repulsive forces caused by charged objects. Which statement is true about the electromagnetic force?

• Only the charge of one object that is interacting with another charged object affects the electromagnetic force between the two objects.

• The distance between two charged objects has no effect on the electromagnetic force between the two objects.

• The charge between two charged objects has no effect on the electromagnetic force between the two objects.

• The charge and distance between two charged objects both influence the electromagnetic force between the two objects.

Multiple Choice

Gravity is only able to pull things. Why can the electric force push or pull?

• There are two types of electric charge. There is only one type of mass.

• the electric force depends on the distance between charges but the gravity force does not depend on the distance between masses

• There are two types of mass but only one type of charge.

• gravitational force can act over long distances, but electric force only acts over short distances

Multiple Choice

If the distance doubles, what happens to the force?

• Reduced by half
• Reduced by 1/4
• Stays the same
• Quadruples

Multiple Choice

If each of the charges doubles, what happens to the force?

• Quadruples
• Doubles
• Stays the same
• Reduced by half

Multiple Choice

If the distance is reduced by half, what happens to the force?

• Quadruples
• Doubles
• Triples
• Reduces by half

Multiple Choice

When the distance between two charges is doubled, the magnitude of the electrostatic force between them ―

• also doubles

• remains the same

• becomes half of what it was

• becomes one quarter of what it was

Multiple Choice

A point charge (q1) has a magnitude of 3x10^-6 C. A second charge (q2) has a magnitude of -1.5x10^-6 C and is located 0.12 m from the first charge. Determine the electrostatic force each charge exerts on the other.

• -4.52 x 10^-3 N

• -83 N

• -2.81 N

• -9 x 10³ N

Multiple Choice

Charge on sphere A is 3 C and charge on sphere B is 4 C. What is the electrostatic force if the charges are 2 meters apart.

• $$2.70\times10^{10\ }N$$  

• $$1.35\times10^{10\ }N$$  

• 12 N

• 6 N

Multiple Choice

A charge of 3 C is 27 m away from another charge. They exert a force of -2.59 x 10⁸ N on each other. What is the 2nd charge?

• 5 C

• -5 C

• 7 C

• -7 C

Multiple Choice

A 5 C and 8 C are 8 m apart. What is the force between them?

• 5.625 x 10⁹

• 5.625 x 10^-9

• 4.5 x 10¹⁰

• 4.5 x 10^-10

Multiple Choice

Two charged sphere are put a certain distance apart. If the charge spheres are moved twice the distance away, what would be the effect on electric force?

• electric force would double

• electric force would quadruple

• electric force would halve

• electric force would be 1/4

Multiple Choice

A 5 C and 8 C charge give off a force of 2.5 x 10⁹ N. What is the distance between them?

• 11 m

• 12 m

• 121 m

• 144 m

Multiple Choice

The Electric Force is strongest when charges are...

• close together
• far apart
• the electric force is constant everywhere

Multiple Choice

Which shows electric field lines?

• A

• B

• C

Multiple Choice

Coulomb used a torsion balance to show that an electric charge rotates a metal sphere based on the amount of charge. What was the main importance of the experiment?

• to develop better insulators

• to created cheaper metals

• to understand electric charges better

• to put out daily content as an influencer

Multiple Choice

Which of the following explains why electrical energy is a type of kinetic energy?

• Electrical Energy is the movement of electrons (negative charges).

• Electrical energy is sometimes used to power both toy and real cars.

• When people get shocked in movies, it always makes them move

• Electrical Energy is always causes by friction such as fur rubbing against amber.

Multiple Choice

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

• Electric Field

• Electric Current

• Electric Force

• Electric Circuit

Dropdown

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

Select answer

Labeling

Label the diagram with the correct parts of a circuit.

Drag labels to their correct position on the image

Switch

Wire

Lightbulb

Battery

Resistor

🔥Length

🔥Thickness

🔥Temperature

​

Factors affecting resistance

Multiple Choice

Increasing the length of the wire will ___ the brightness of the bulbs in a series circuit.

• increase

• decrease

• not affect the

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. 

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. 

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? Think of the mathematical relationships.

• The current will increase.

• The current will decrease.

• The current will neither increase or decrease.

💡​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

Calculate the voltage of a 2.5 A of current through a resistance of 10 ohms? 

Include units in your response.

Fill in the Blanks

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

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