Electric Forces Review

A repelling force occurs between two charged objects when the charges are __________.

• the same signs (+, +) and (-,-)

• different signs (+, -)

• equal magnitude

• unequal magnitude

Tags

NGSS.MS-PS2-3

You have 2 circular objects, and each has a positive charge near each other, but not touching. Which statement describes the force that is exerted on the objects due to their electric charge?

• There is a force pushing both objects to the left.

• There is a force pulling the objects toward each other.

• There is a force pushing the objects away from each other.

• There is no force on the objects due to their electric charge.

Tags

NGSS.MS-PS2-5

An attracting force occurs between two charged objects when the charges are of _______________.

• same signs (+, +) or (-,-)

• different signs (+ and -)

• equal magnitude

• unequal magnitude

Tags

NGSS.MS-PS2-3

What happens to the electric force between the objects when you increase the distance between a positively charged object and a negatively charged object? (Everything else remains constant.)

• The electric force decreases.

• The electric force increases.

• The electric force remains constant.

• There is not enough information to answer the question.

Tags

NGSS.MS-PS2-3

Can neutral objects become charged?

• Yes, by wishing it to be so.

• No, never.

• Yes, by being near or in contact with a charged object.

• No, not under any circumstance.

What happens when a rubber rod is rubbed with a piece of fur, giving the rod a negative charge?

• Negative charges are moved from the rod to the fur.

• Negative charges are moved from the fur to the rod.

• Negative charges are added to the rod and the fur remains neutral.

• Positive charges are removed from the rod, and the fur remains neutral.

When a material does not permit an easy flow of electrons through it, this can be classified as...

• conductor

• insulator

• semiconductor

• superconductor

When you walk across a carpet in socks, they pick up charges. Later, there aren't any charges in your socks. what probably happened to the charges?

• The charges disappeared.

• The charges switched signs.

• The charges transferred to another object.

• The charges broke apart into smaller particles.

Tags

NGSS.MS-PS2-5

What variable do "newtons" represent?

• Electrostatic Charge

• Electric Force

• Distance

• Mass

Tags

NGSS.HS-PS2-1

Before the balloons and sweaters are rubbed together, both objects are __________ charged. After they are rubbed together the sweater is __________ charged and the balloon is ___________ charged

• negative/positive/negative

• neutral/positive/negative

• positive/negative/neutral

• neutral/negative/positive

Tags

NGSS.MS-PS2-3