Electric Charge and Coulomb's Law

Multiple Choice

Which quantity and unit are correctly paired?

• electric field strength and N/C
• electricity and Coulombs
• electrostatic force and electrons
• electric field strength and E

Multiple Choice

Which of the following statements is false about electric field lines

• electric field lines cannot cross
• electric field lines point away from positive charge
• electric field lines are always straight lines
• electric field lines show how a proton would move in an electric field

Multiple Choice

At which point is the electric field the strongest

• A
• B
• C
• D

Multiple Choice

Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.

• +,+
• +,-
• -,+
• -,-

Multiple Choice

It is observed that Balloon A is charged negatively. Balloon B exerts a repulsive effect upon balloon A. Would the electric field vector created by balloon B be directed towards B or away from B and why?

• towards because electric field lines point away from negative charges
• towards because electric field lines point away from positive charges
• away because electric field lines point away from negative charges
• away because electric field lines point toward positive charges

Multiple Choice

Q_A and Q_B are two charges creating an electric field. Based on the electric field lines, we can conclude

• Q_A and Q_B are both positive
• Q_A and Q_B are both negative
• Q_A is positive and Q_B is negative
• Q_A is negative and Q_B is positive

Multiple Choice

Which of the following is a true statement about the electric field between the two plates?

• The field is attractive between the plates and uniform in strength
• The field is repulsive between the plates and uniform in strength
• The field is attractive between the plates and strongest near the positive
• The field is repulsive between the plates and strongest near the positive

Multiple Choice

The electrical force between charges is strongest when the charges are

• close together
• far apart
•  the electric force is constant everywhere.
• there is no pattern

Multiple Choice

Electric charges that are different _______ each other.

• Attract
• Repel

Multiple Choice

Electric charges that are alike _______ each other.

• Attract
• Repel

Multiple Choice

According to Coulomb's Law, The greater the separation distance between two charges the greater the magnitude of the electric force. True or False?

• True

• False

Multiple Choice

Electrostatic force F is directly proportional to:

• r^2 (distance squared)
• q1
• q2
• both q1 and q2

Multiple Choice

What are the two types of charges that objects may possess?

• + and +
• + and -
• + and neutral 
• - and neutral 

Multiple Choice

What does it mean when the electric field lines are close together?

• the field is positive
• the field is negative
• The field is strong
• the field is weak

Multiple Choice

What do you call the process of charging a conductor by bringing it near another charged object?

• induction
• polarization
• neutralization
• conduction

Multiple Choice

Which has a charge with the greatest magnitude?

• An object with a charge of 0.

• An object with a charge of -2

• An object with a charge of +2

• An object with a charge of -3

Multiple Choice

Find the magnitude of the electrostatic force between two charges of 1.0 C each, which are 1.0 meter apart?

• 9 x 10^19 N

• 9 x 10^9 N

• 1.1 x10^10 N

• 1.1x 10^-10 N

Multiple Choice

How is the electric force between two charges affected when both of the charges are doubled?

• four times as much

• two times as much

• half as much

• one quarter as much

Multiple Choice

Two similar metal spheres, A and B, have charges of +2.0 x 10^-6 coulomb and +1.0 x 10^-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4.0N newtons. What is the magnitude of the electrostatic force on B due to A?

• 2.0N

• 4.0N

• 8.0N

• 1.0N

Multiple Choice

2 charged objects both feel a force of 200 N. If q1 becomes 3 times bigger, what is the new force

• 203

• 600

• 66.7

• 1800

Multiple Choice

2 charges are 20 cm apart and feel a force of 500 N. if the distance between them becomes 60 cm, what is the new force

• 4500

• 540

• 1500

• 55.6

Multiple Choice

True or false: Every particle in the universe attracts every other particle in the universe.

• True

• False

Multiple Choice

The study of electric charges at rest is known as?

• Coloumb's law

• Electric Current

• Electric forces

• Electrostatics

Categorize

Options (20)

Can be positive or negative

Experiences attraction or repulsion

Measured in coulombs

Can be transferred between objects

Creates a force on other charged objects

Describes the electrostatic interaction between charged particles

States that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them

Can be used to calculate the force between two charged objects

Helps understand the behavior of charged particles

Applies to both positive and negative charges

Region around a charged object where a force is experienced

Vector quantity that describes the force experienced by a test charge at a given point

Can be influenced by the presence of other charges

Can be visualized using field lines

Strength decreases with distance from the source charge

Process of creating an electric field in a conductor by changing the magnetic field around it

Can be used to generate electricity in power plants

Occurs when a charged object is brought near a neutral object, causing a redistribution of charges

Can be used to charge objects without direct contact

Important concept in electromagnetism and electrical engineering

Organize these options into the right categories

Coulomb's Law

Electric Charge

Electric Field

Induction