Chapters 3 - 4 Quiz

What is the correct unit for electric charge? A) voltage B) current C) coulomb D) ohm

coulomb

For the reaction shown, the charged objects must

have a positive charge on one and negative charge on the other.

Other factors remaining constant, what would the effect on current flow be in a circuit if the applied voltage was doubled? it would be divided by two it would be divided by four it would remain the same it would double

it would double

Voltage is produced in a generator by means of: friction. heat. mechanical-magnetic energy. pressure.

mechanical-magnetic energy.

The ohmmeter is an instrument used to measure: current. voltage. energy. resistance.

resistance

When a conducting path for electrons is placed across the two terminals of a battery, electrons flow from: the negative terminal to the positive terminal. the positive terminal to the negative terminal. the north pole to the south pole. the south pole to the north pole.

the negative terminal to the positive terminal.

The force that causes the flow of electrons through a conductor is the: power. voltage. current. resistance.

voltage

According to Ohm's law current is equal to: voltage multiplied by resistance. voltage plus resistance. voltage minus resistance. voltage divided by resistance.

voltage divided by resistance.

A single bolt of lightning delivers about ________ of electricity. 1 trillion watts 1 watt 100 watts 1000 watts

1 trillion watts

A resistance value of 1.5 kΩ is equivalent to:

1,500 ohms.

What is the resistance of an electric iron with a nameplate rating of 120 volts and 10 amps? 12 Ω 30 Ω 60 Ω 10 Ω

12 Ω

An electrical transmission line voltage of 230 kilovolts is equivalent to 230,000 volts. 2,300 volts. 230,000,000 volts. 230 volts.

230,000 volts.

The voltage waveform shown is that for

AC.

Current electricity: All of the answers are correct. is an electric charge in motion. can be classified as being DC. can be classified as being AC.

All of the answers are correct.

An electronic air cleaner uses a low AC voltage to charge its plates.

False

It is possible for current to flow in a circuit with no voltage. True or false?

False

Most of the electricity used to supply our communities is produced by chemical reaction.

False

The symbol used to represent current is:

I

Charging by conduction occurs when a neutral object is placed in contact with an already-charged object. True or false.

True

Which of the following is an example of a load? an electrical wall outlet an extension cord a pushbutton a hair dryer

a hair dryer