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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.
Motion of an object in a plane is known two dimensional (2-D) motions. For 2-D motion acceleration or velocity can be defined by two elements in any two mutually perpendicular dire
In a Newton's ring experiment with air film the diameter of nth and (n - 5)th dark rings are 12.2 mm and 8.1 mm respectively. Evaluate the diameter of (n + 5)th dark ring
the magnetic field at a dictance of 2cm from the axis of a straight conductor carrying current is 12mT.Find the currentin the conductor?
Pitch: It is the characteristics of a sound by which we can distinguish among a grave and shrill sound is known as pitch. It depends on frequency of the vibrating body and expr
why electric field is zero inside a cavity
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
Used normally, a 150-watt, 120 volt light bulb requires how many amps of current? Ans: Used generally, a 150-watt, 120 volt light bulb needs 1.25 amps.
Working of Compound Microscope: The object under examination is placed in front of the objective. The objective forms it's real and inverted image with in the focal length of t
A figure separated into squares, each of size 1 mm 2 is being viewed at a distance of 9cm by a magnifying lens of local length 10cm, held close to the eye. (i) Illustrate a ray
Explain the term 'work function' of a metal. The threshold frequency of a metal is f 0 . When the light of frequency 2f 0 is incident on the metal plate, the maximum velocity of e
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