BHS Electricity and Magnetism Test Review

A material where electrical charges can move easily is a....

• insulator

• conductor

• nothing

• rubber

Glass, rubber, wood, and plastic are all examples of ​ (a)   since electricity cannot pass through them.

• Insulators
• Conductors
• Thermel conductivity
• Materials

When an object gains electrons, what is its charge?

• Positive

• Negative

• Neutral

• No charge

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When an object loses electrons, what is its charge?

• Positive

• Negative

• Neutral

• No charge

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Transfer of electrons between 2 surfaces with direct contact is​ (a)   Transfer of electrons between 2 surfaces with no contact is​ (b)  

• conduction
• induction
• Friction
• Polarization

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Select all that apply: How can you make an electric force STRONGER?

• Bring the charged objects closer together

• Move the charged objects further away

• Increase the amount of charge

• Decrease the amount of charge

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​ (a)   measure the voltage or difference in potential energy and ​ (b)   measure the electric current.

• Volts
• Amperes

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In electric currents, ​ (a)   flow from ​ (b)   to ​ (c)  

• Electrons
• Positive
• Negative
• Neutrons

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What eventually happens to objects that are charged with static electricity?

• They destroy electrons forever

• They transfer electrons to air or as a spark to another object

• They transfer neutrons to the air

• They create more protons to become neutral

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Why is a compass needle attracted to the northern part of Earth?

• Wind is stronger in the northern part of Earth

• It is being attracted to the Magnetic South Pole

• It is being attracted to the Magnetic North Pole

• It is broken

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