- 1. a continuous flow of electric charge
A) Electric field
B) Electric current
C) Electric energy
- 2. a flow of electric charge in only one direction
A) Alternating current
B) Direct current
- 3. a flow of electric charge that regularly reverses its direction
A) Alternating current
B) Direct current
- 4. a material through which electric charge can flow easily
A) Electrical conductor
B) Electrical insulator
- 5. a material through which charge cannot flow easily
A) Electrical conductor
B) Electrical insulator
- 6. the opposition to the flow of electric charges in a material
A) Prohibition
B) Resistance
C) Repelance
- 7. a material that has almost zero resistance when it is cooled to low temperature
A) Superconductor
B) Ultraconductor
C) Nanoconductor
- 8. voltage, or the difference in electrical potential energy between two places in an electric field
A) pick the other answer
B) Potential difference
- 9. potential difference, the difference in electrical potential energy between two places in an electric field
A) Voltage
B) pick the other answer
- 10. a device that converts chemical energy intro electrical energy
A) Battery
B) Generator
C) Diode
- 11. the relationship of voltage, current, and resistance: V = IR
A) Newton's law
B) Riccardo's law
C) Ohm’s law
D) Conway's law
|