Unit 6 Test Review

T or F: The mathematical relationship between charge (q) and the electrical force between the center of 2 charges is indirect.

• True
• False

Which of the following will happen due to an electric force?

• An iron nail moves towards a magnet after the nail is placed close to it.
• a lab cart rolls across the floor when it is pushed
• a plastic rod attracts a piece of confetti after it is rubbed with a piece of wool
• A ball falls vertically to the ground after it is released from a tall building.

Which of the follow occurs due to magnetic force?

• The needle of a compass points towards Earth's North Pole
• A person gets a shock from a door knob after walking across a carpet.
• Earth is constantly pulling all objects towards its center.
• Pieces of clothing stick together after being in a dryer.

Which household appliance typically contains an electric motor?

• light bulb
• solar panel
• battery charger
• washing machine

What is the main function of a transformer in electrical systems?

• to store electrical energy
• to convert AC to DC
• to generate electricity
• to change voltage levels

What force is mainly responsible for the rotation of the armature in a simple electric motor?

• gravitational force
• nuclear force
• magnetic forcer
• electrostatic force

What converts mechanical energy to electrical energy using electromagnetic induction?

• electric motor
• generator
• transformer
• battery

Which of the following meteorological events provides the best example of electric forces in everyday life?

• hurrican
• snow storm
• tornado
• lightning

Which of the following meteorological events provides the best example of electric forces in everyday life?

• hurricane
• snow storm
• tornado
• lightning

What happens when a charged rod is brought near a neutral metal sphere? (There is no contact between the objects)

• The sphere remains completely neutral
• The sphere becomes permanently charged
• The charges in the sphere redistribute until the rod moves away
• The sphere loses all its electrons.