Electronics-Voltage and Current
Electronics-Voltage and Current
11. If 40 C of charge flow past a point in 20 s, what is the current?
- 2 A
- 0.5 A
- 20 A
- 40 A
12. Batteries differ from fuel cells in that
- a battery is a closed system
- a battery uses hydrogen and oxygen to create electricity
- a battery uses a polymer electrolyte membrane
- none of the above
13. The removal of a non-neutral subatomic particle converts the atom into a:
- charged ion
- nucleus
- heavier element
- compound
15. In which states may matter may be found?
- solid, liquid, or mineral
- solid, gas, or liquid
- mineral, gas, or liquid
- plastic, solid, or gas
16. Material that consists of a mixture of elements is considered to be:
- an element
- an ion
- a compound
- a molecule
18. When considering conventional current versus electron current flow:
- electron current flow came first
- protons move in conventional current flow
- conventional current flow came first
- the direction of current is the same in both methods
19. Which unit of charge contains 6.25 × 1018 electrons?
- An ampere
- A coulomb
- A volt
- A joule
20. A switch is a device that:
- short circuits complex circuits
- holds a fuse
- has double poles
- opens or completes a current path