A conductor is any material that __________.
Answer(s): B
Conductors have free electrons that are easily moved along with the right kind of push or force. There are a number of ways to cause these electrons to progress along a conductor. Heat, light, magnetism, chemicals, pressure, and friction can cause the generation of an EMF useful in causing electrons to move along a conductor.
Convention current flow is from __________.
Answer(s): C
Conventional current flow is said to be from + to -. This idea was originally used by Ben Franklin to explain the conduct of lightning. This conventional flow is still used today by electrical engineers and people working in physics.
Electron flow is from __________.
Electron flow can be demonstrated to flow from - to +. The action that takes place in a vacuum tube indicates that the + attracts the - electron to cause it to move from - to +.
An insulator is a material with __________.
An insulator is a material that has tightly held electrons and very few, if any, free electrons. This means that it can be used to protect the conductor since the insulator will not allow free electrons from the conductor to knock lose any tightly held electrons of the insulator material.
Opposition to current flow is measured in __________.
Answer(s): A
The unit of measure for resistance or opposition to current flow is the ohm. It was agreed on many years ago and has aided in making the electrical field progress so rapidly.
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