Electronics-Voltage and Current
Electronics-Voltage and Current
31. An element is a substance that is:
- varied throughout the entire piece
- used only in electronics
- electrically charged
- found only in its pure form
32. Current is:
- the presence of a positive charge
- the abundance of electrons
- the movement of electrons
- the repulsion of electrons
33. What do you call a diagram that shows the electrical connections of a circuit's components?
- A schematic diagram
- A pictorial diagram
- A block diagram
- An electrical diagram
34. A short circuit will have:
- a small current flow
- a large current flow
- no current flow
- some current flow
35. The basic difference between a fuse and a circuit breaker is
- a fuse is slower
- a fuse is reusable
- a circuit breaker is reusable
- a circuit breaker is more reliable
37. A secondary cell generates dc via chemical activity; a primary cell generates dc:
- electrically
- thermally
- optically
- chemically
38. Which of the following statements is true?
- Unlike charges repel and like charges attract.
- Like charges repel and unlike charges attract.
- Unlike charges attract and like charges attract.
- Like charges repel and unlike charges repel.
39. if an electrical system is compared to a fluid system, the electrical current corresponds to the:
- pressure
- pump
- water wheel
- water flow