Understanding Electric Forces and Charges

What is the term for the buildup of electric charges on an object?

• Electric discharge

• Static electricity

• Conduction

• Induction

Which material allows charges to move easily?

• Insulator

• Conductor

• Ground

• Electric field

What is the method of charging an object by direct contact called?

• Induction

• Conduction

• Electric discharge

• Grounding

Explain how grounding helps in the process of electric discharge.

• It increases the electric field around the object.

• It provides a path for electric charges to move to the earth.

• It prevents charges from moving.

• It charges the object by induction.

How does induction differ from conduction in terms of charging an object?

• Induction requires direct contact, while conduction does not.

• Induction involves grounding, while conduction does not.

• Induction does not require direct contact, while conduction does.

• Induction and conduction are the same processes.

Describe a scenario where static electricity might cause a problem and explain how it can be mitigated.

• Static electricity can cause a spark near flammable materials; it can be mitigated by grounding.

• Static electricity can power a light bulb; it can be mitigated by using a battery.

• Static electricity can charge a phone; it can be mitigated by using a charger.

• Static electricity can cool a computer; it can be mitigated by using a fan.

What happens to the electric field around a charged particle when another charged particle is brought near it?

• The electric field disappears.

• The electric field remains unchanged.

• The electric field exerts a force on the other charged particle.

• The electric field becomes weaker.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A balloon is rubbed against a wool sweater and becomes charged. Explain the process and identify the type of charging involved.

• The balloon is charged by conduction as it touches the sweater.

• The balloon is charged by induction as it is near the sweater.

• The balloon is charged by static electricity as it is rubbed against the sweater.

• The balloon is charged by grounding as it is connected to the earth.

Which of the following best describes an insulator?

• A material that allows electric charges to move freely.

• A material that does not allow electric charges to move easily.

• A material that can be charged by induction.

• A material that can be charged by conduction.

If a charged rod is brought near a neutral metal sphere without touching it, what happens to the charges in the sphere?

• The charges in the sphere remain evenly distributed.

• The charges in the sphere move, causing one side to become positively charged and the other negatively charged.

• The sphere becomes charged by conduction.

• The sphere becomes grounded.

Tags

NGSS.MS-PS2-5