Electrical current is measured in which of the following units?

1. A Volts
2. B Watts
3. C Ohms
4. D Amperes

Electrical power is measured in which of the following units?

1. A Volts
2. B Watts
3. C Watt-hours
4. D Amperes

What is the term for the flow of electrons in an electric circuit?

1. A Voltage
2. B Amperes per second
3. C Volts per second
4. D Current

What term describes the number of times per second that an alternating current makes a complete cycle?

1. A Pulse rate
2. B Wave number
3. C Frequency
4. D Wavelength

A difference in which of the following causes electron flow?

1. A Voltage
2. B Ampere-hours
3. C Capacitance
4. D Inductance

What is the unit of frequency?

1. A Hertz
2. B Henry
3. C Farad
4. D Epicycles per second

Why are metals generally good conductors of electricity?

1. A They have relatively high density
2. B They have many free electrons
3. C They have many free protons
4. D They have relatively high Young's modulus values

Which of the following is a good electrical insulator?

1. A Sea water
2. B Glass
3. C Stainless steel
4. D Graphite

Which of the following describes alternating current?

1. A Current that alternates between a positive direction and zero
2. B Current that alternates between a negative direction and zero
3. C Current that alternates between positive and negative directions
4. D All these answers are correct

Which term describes the rate at which electrical energy is used?

1. A Resistance
2. B Current
3. C Power
4. D Voltage

What type of current flow is opposed by resistance?

1. A Direct current
2. B Alternating current
3. C RF current
4. D All these choices are correct