Electric Charge and Force Quiz

How many types of electric charge exist?

• one type

• two types

• three types

• four types

Describe the force between two positive point charges that interact.

• The force is attractive and acts along the line joining the two point charges.

• The force is attractive and acts tangential to the line joining the two point charges.

• The force is repulsive and acts along the line joining the two point charges.

• The force is repulsive and acts tangential to the line joining the two point charges.

Tags

NGSS.HS-PS2-4

Two charges are repelled by a force of 2.0 N. If the distance between them triples, what is the force between the charges?

• 0.22 N

• 0.67 N

• 2.0 N

• 18.0 N

Tags

NGSS.HS-PS2-4

How are electrostatic force and charge related?

• The force is proportional to the product of two charges.

• The force is inversely proportional to the product of two charges.

• The force is proportional to any one of the charges between which the force is acting.

• The force is inversely proportional to any one of the charges between which the force is acting.

Tags

NGSS.HS-PS2-4

A −10 nC charge is at the origin. In which direction does the electric field from the charge point at x + 10 cm?

• The electric field points away from negative charges.

• The electric field points toward negative charges.

• The electric field points toward positive charges.

When electric field lines get closer together, what does that tell you about the electric field?

• The electric field is inversely proportional to the density of electric field lines.

• The electric field is directly proportional to the density of electric field lines.

• The electric field is not related to the density of electric field lines.

• The electric field is inversely proportional to the square root of density of electric field lines.

Tags

NGSS.HS-PS3-5

A negative charge is 10 m from a positive charge. Where would you have to move the negative charge to increase the potential energy of the system?

• The negative charge should be moved closer to the positive charge.

• The negative charge should be moved farther away from the positive charge.

• The negative charge should be moved to infinity.

• The negative charge should be placed just next to the positive charge.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Two plastic spheres with uniform charge repel each other with a force of 10 N. If you remove the charge from one sphere, what will be the force between the spheres?

• The force will be 15 N.

• The force will be 10 N.

• The force will be 5 N.

• The force will be zero (or nearly zero).

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

What creates a greater magnitude of force, two charges +q a distance r apart or two charges –q the same distance apart?

• Two charges +q a distance r away

• Two charges −q a distance r away

• The magnitudes of forces are equal.

Tags

NGSS.HS-PS2-4

True or false—The potential from a group of charges is the sum of the potentials from each individual charge.

• false

• true