Fundamentals of Electric Charge and Electric Fields

Which of the following is a conductor?

• sheet of paper

• t-shirt

• penny

• plastic bottle

Which of the following is the best insulator?

• metal paper clip

• wood log

• bowl of water

• penny

In static electricity, similar charges

• attract.

• behave like N & S poles

• remain neutral

• repel

To build a basic circuit, you need wires, a light bulb, and

• an insulator

• another light bulb

• a battery

• a rubber band

Which of the following demonstrates static electricity?

• Putting your fingers near an electrical outlet could result in a painful shock.

• You bend a paperclip back and forth until it breaks. The broken end feels hot.

• After tumbling with other clothes in a warm dryer, your sock sticks to your shirt.

• You use a charger to charge your cell phone battery.

Which of the pairs of balloons will repel each other?

• Set A

• Set B

• Set B and Set C

• Set A and set D

What will happen when you remove a bulb from the circuit pictured?

• The other bulb will become brighter.

• The other bulb will turn off.

• The other bulb will become dimmer.

• It will remain a closed circuit.

In the drawing of the electromagnet, A is the

• battery

• wires

• metal nail

• negative charges

In the drawing of the electromagnet, letter B is the

• wires

• metal nail

• negative charges

• battery

Which type of magnet can be turned off?

• bar magnet

• horseshoe magnet

• iron filings

• electromagnet