Electric Forces

The force between charged objects.

• Electric Force

• Magnetic Force

• Gravity Force

• NO

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following materials is a good conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

Which of the following is an insulator?

• Silver

• Aluminum

• Plastic

• Iron

A student observes that a plastic rod does not conduct electricity. What can be inferred about the material of the rod?

• It has free electrons.

• It is a conductor.

• It is an insulator.

• It is magnetic.

A charged object is brought near a neutral conductor. Describe the process that occurs and the resulting effect on the conductor.

• The conductor becomes charged by induction.

• The conductor remains neutral.

• The conductor becomes charged by conduction.

• The conductor becomes magnetic.

If you increase the charge of both objects, what would happen to the electric force?

• The electric force decreases.

• The electric force remains the same.

• The electric force increases.

• The electric force becomes zero.

Tags

NGSS.MS-PS2-3

Why would rubber be good to wrap around powerlines or power cables?

• Rubber is a conductor, it allows electricity to escape through it.

• Rubber is an insulator, it prevents electricity from escaping the wires

• Rubber is an insulator, it allows electricity to escape through it.

• Rubber and electricity are not related.

Tags

NGSS.MS-PS2-3

A student claims that increasing the distance between two charged objects will increase the electric force. Is this true?

• The claim is correct because distance does not affect electric force.

• The claim is incorrect because increasing distance decreases electric force.

• The claim is correct because increasing distance increases electric force.

• The claim is incorrect because distance has no effect on electric force.

Tags

NGSS.HS-PS2-4

When socks get stuck to towels in your dryer, this is an example of (a)  

• current electricity
• static electricity

What types of charges attract?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Positive and Negative

Tags

NGSS.3-PS2-3