Static Electricity & Conduction Flashcards
A semi-conductor will have.
four electrons in the outer shell.
Ion current is found in.
liquids and gasses.
What state of matter can electricity conduct through.
solids and liquids only.
Electricity can conduct through a vacuum by thermionic emission.
An example of a good electrical insulator is.
glass.
You MUST know that surely!.
Static charges remaining in an aircraft are dissipated by.
the use of a conducting type nose wheel.
Usually, the nose wheel tyre contains graphite, to dissipate the static electricity on landing.
An element could be considered to be a conductor if it has.
a small number of electrons in its outer orbit.
The lower the number of electrons in the outer shell, the more readily it will give them up.
A charged body is said to have.
a surplus or deficiency of electrons.
If it has a surplus of electrons it is negatively charged. A deficiency of electrons makes it positively charged.
The risk of a fire due to static electricity is overcome.
by connecting all metal components by bonding.
The purpose of bonding is to.
stop different potentials developing with subsequent fire risks.
The various parts of an aircraft airframe are maintained at the same potential by.
bonding.
The resistance of the current return path through the aircraft is always considered negligible, provided the.
structure is adequately bonded.
If an insulated conductor is placed near to a negatively charged rod, the nearest end of the conductor becomes.
positively charged.
The free electrons in the conductor will be repelled away from the rod, leaving that end positively charged.
The electromagnetic force between two charged bodies is.
inversely proportional to the square of the distance between them.
If a negatively charged conductor is placed next to an insulated rod.
the rod becomes positively charged.
The negative charges on the rod are repelled by the charged conductor (regardless of its insulation).
