Voltage and Current problems
- 1. An element is a substance that is:
Options- A. varied throughout the entire piece
- B. used only in electronics
- C. electrically charged
- D. found only in its pure form Discuss
Correct Answer: found only in its pure form
- 2. If a fluid system is compared to an electrical system, the fluid pump will correspond to a:
Options- A. conductor
- B. lamp
- C. battery
- D. insulator Discuss
Correct Answer: battery
- 3. The battery symbol is:
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 4. What are the unit and symbol for current?
Options- A. Ampere, A
- B. Coulomb, I
- C. Ampere, Q
- D. Ampere, I Discuss
Correct Answer: Ampere, I
- 5. What are the basic building blocks that all matter is composed of?
Options- A. electrons, neutrons, and protons
- B. two protons for each neutron
- C. two protons for each electron
- D. electrons, neutrons, and charged ions Discuss
Correct Answer: electrons, neutrons, and protons
- 6. A switch is a device that:
Options- A. short circuits complex circuits
- B. holds a fuse
- C. has double poles
- D. opens or completes a current path Discuss
Correct Answer: opens or completes a current path
- 7. In which states may matter may be found?
Options- A. solid, liquid, or mineral
- B. solid, gas, or liquid
- C. mineral, gas, or liquid
- D. plastic, solid, or gas Discuss
Correct Answer: solid, gas, or liquid
- 8. An ammeter is used to measure
Options- A. voltage
- B. current
- C. resistance
- D. All of the above Discuss
Correct Answer: current
- 9. Batteries differ from fuel cells in that
Options- A. a battery is a closed system
- B. a battery uses hydrogen and oxygen to create electricity
- C. a battery uses a polymer electrolyte membrane
- D. none of the above Discuss
Correct Answer: a battery is a closed system
- 10. If 60 J of energy are available for every 15 C of charge, what is the voltage?
Options- A. 4 V
- B. 60 V
- C. 15 V
- D. 0.25 V Discuss
Correct Answer: 4 V
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