Electricity & Magnetism Review

If an object is charged, what does the object gain or lose?

• Protons

• Neutrons

• Electrons

• Atoms

Tags

NGSS.MS-PS2-3

When charges in an uncharged metal object are rearranged without direct contact with a charged object, this is called?

• Conduction

• Induction

• Friction

• Polarization

Tags

NGSS.MS-PS2-5

When you rub your socked feet on the carpet, you become negatively charged... so what charge is the carpet?

• Positively charged

• Negatively charged

• Neutral

• No charge

Tags

NGSS.MS-PS2-3

Static guard is a spray that can be used to reduce or eliminate static cling from clothes that have gained electrons due to friction. Static guard is made with chemicals with what kind of charge?

• Positive

• Negative

• Neutral

• No charge

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is an electric discharge?

• The release of stored energy

• The movement of electrons

• The flow of current

• The buildup of charge.

The name of a material that charges can move easily through?

• Insulator

• Conductor

• Semiconductor

• Resistor

What is an insulator? Provide examples.

• A) A material that allows electrons to flow easily, such as copper and aluminum

• B) A material that resists electron flow, such as rubber and glass

• C) A material that stores charge, such as a capacitor

• D) A material that blocks magnetic fields, such as lead.

What is moving in an electrical current?

• Protons

• Neutrons

• Electrons

• Atoms

The size of an electric force depends on what 2 things?

• The amount of charge and the distance between charges

• The type of material and the temperature

• The speed of electrons and the type of charge

• The voltage and the resistance.

Tags

NGSS.MS-PS2-3

What is the law of electric charges?

• Like charges repel, unlike charges attract

• Like charges attract, unlike charges repel

• Charges do not interact

• Charges are always neutral.