Electrostatics, Electric Fields and Coulomb's Law

Coulomb’s law states that the force between two charged objects will __________ when the magnitude (value) of the object’s charge increases.

• increase

• decrease

• stay the same

• first increase, then decrease

Tags

NGSS.HS-PS2-4

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

• it doubles

• it gets cut in half

• it quadruples

• it is cut by 1/4

Tags

NGSS.HS-PS2-4

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

Tags

NGSS.HS-PS2-4

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

• +,+

• +,-

• -,+

• -,-

Tags

NGSS.HS-PS3-5

If the distance between two charges is halved, how does the force between them change according to Coulomb's Law?

• It is halved

• It is quartered

• It is doubled

• It increases by four times

Tags

NGSS.HS-PS2-4

What does Coulomb's Law describe?

• The relationship between electric current and magnetic fields

• The force between two charges being directly proportional to the product of their charges and inversely proportional to the square of the distance between them

• The rate of flow of electric charge

• The resistance offered by a material to the flow of electric current

Tags

NGSS.HS-PS2-4

According to Coulomb's Law, what happens to the force between two charges if the charge of one is tripled and the distance between them is also tripled?

• The force remains unchanged

• The force is tripled

• The force is nine times greater

• The force is reduced to one-third

Tags

NGSS.HS-PS2-4

What is the unit of electric charge?

• Joule

• Newton

• Coulomb

• Ampere

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

• Quadruples

• Doubles

• Stays the same

• Reduced by half

Tags

NGSS.HS-PS2-4

If a negatively charged rod touches a conductor, the conductor will be charged by what method? 

• Friction

• Conduction

• Induction

• Convection