Electricity

What is static electricity?

• The flow of electric current through a conductor.

• The buildup of electric charge on the surface of objects.

• The discharge of electricity in the atmosphere.

• The generation of electric fields by batteries.

What happens when opposite charges are near each other?

• They repel each other

• They do not interact

• They attract each other

• They cancel each other out

What happens to the charges of clothes when they gain electrons?

• They become neutral

• They become positive

• They become negative

• They become insulated

What effect do like charges have on each other?

• They attract each other

• They repel each other

• They become neutral

• They merge together

What happens when your body builds up a static charge and you touch a metal doorknob?

• You feel a cooling sensation.

• You feel a shock.

• The doorknob becomes hot.

• Nothing happens.

What is the cause of the shock you feel when touching a metal doorknob after walking on a carpeted floor?

• Heat transfer from your hand to the doorknob.

• Electrical discharge due to static electricity.

• Magnetic forces between your hand and the doorknob.

• Chemical reactions on the surface of the doorknob.

What is a conductor in terms of electrical properties?

• A) A material that blocks electric current

• B) A material that allows electric current to pass

• C) A material used exclusively in batteries

• D) A material that can only be found in a solid state

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

• A) Plastic

• B) Wood

• C) Metal

• D) Rubber

What defines an insulator's electrical properties?

• A) Allows electricity to pass freely

• B) Converts electricity into light

• C) Does not allow electric current to pass

• D) Enhances electric current

Which material is NOT a good insulator?

• A) Glass

• B) Metal

• C) Plastic

• D) Wood