Define electromagnetism.
What will be an ideal response?
Electromagnetism uses the theory that whenever an electrical current flows through a conductor, a magnetic field is formed around the conductor. The number of lines of force and the strength of the magnetic field produced will be in direct proportion to the amount of current flow.
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A safety stand is also called a _______
A) Safety stool B) Jack stand C) Jack D) Bottle jack
Which of the following features increases overall efficiency to between 83% and 89%?
A) sealed combustion chamber B) flame-retention burner C) barometric damper D) aquastat controller
What number must be summed with an inverted 8-bit binary value in order to generate a 2's-complement value? ________
Fill in the blank(s) with correct word
If the second stage of two cascaded amplifiers has its input resistance decrease, what will happen to the magnitude of the output signal?
A) load voltage will decrease but load current will increase B) it will increase C) it will decrease D) there will no change