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Describe the internals of a light-emitting diode (LEO). Describe what happens internally when sufficient current is applied to activate LED.
What isthe device pictured? What purpose does it serve in an electrical circUit?-
Describe the action of the device as shown in the two diagrams.
NEC permits metal wireways for most industrial locations except where they can be exposed to severe physical damage or a corrosive environment. Where physical damage might occur, what additionally must be done to protect the wireway or conduit?
What single action indicates to you that the wire nut you're using to make a splice is either too large or too small? What indicates to you that it's the right size?
Describe the difference in usage between straight-bladed plugs and locking plugs.
a) What is the magnitude of a point electric charge chosen so that the electric field because of it at a point 50 cm away has magnitude 2.0 NC¯¹ ? (b) Get a mathematical expre
The drawing shows the electrical potential as a function of distance along the x-axis. Determine the magnitude of the electrical field in the (a) A to B, (b) B to C and (c)C to D.
It describes the temperature above which the material loses its spontaneous polarization and piezoelectric characteristics.
The waves which do not needs medium for their propagation are known as non- mechanical or electromagnetic waves. Examples : Light, heat (Infrared), radio waves, gamma- rays, X-r
Length contraction (relativity of length) is the length of a body moving with a relativistic velocity v = c relative to an observer is contracted by a factor in the direction of m
Electrons and holes in semi-counductor Metals have free electrons available in conduction band for conduction of electric current. As the valence band overlaps the conduction b
The neutral point in an electrostatic field appears to have a resultant potential. why is this so?
yes.fricton is working always opposite to the motion
A satellite of mass "M" is in orbit around the earth. If a second satellite of mass "2M" is to be placed in the same orbit, the second satellite must have a velocity which is:
You watch a distant carpenter driving his nails into the side of a house at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the bl
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