Electrostatics
A device that uses electromagnetic induction to produce electricity is what?
generator
What is the SI unit of resistance?
Ohm
What electronic device processes information using electric circuits?
Computer
What material allows current to flow with no resistance?
superconductor
What is the transfer of an electric charge by direct contact
Conduction
What device uses a narrow strip of metal in a protective, insulated case to limit current through a circuit?
fuse
Substances that can be easily magnetized are considered what?
magnetically soft
What are pieces of information in computers called?
What is a semiconductor device that produces light when a direct current is applied?
LED
Who built the first electrostatic generator?
Otto von Guericke
What is the general term for a device that transforms energy of an electric current into another useful form of energy?
Load
What device allows the computer to communicate with the outside world?
I/O device
The process of replacing atoms of a semiconductor with atoms of another element is called what?
doping
What is the electrostatic method of reproducing images on paper?
xerography
What is a device that produces a strong magnetic field when electricity passes through it?
electromagnet
What is the imaginary line that encircles the earth halfway between the 2 magnetic poles
Magnetic equator
What is a single chip that contains a complete CPU?
microprocessor
A semiconductor device that acts as a switch and amplifies a weak signal is what?
transistor
What converts pulses of electricity into sound waves?
loudspeaker
What is an electrical switch operated by an electromagnet called?
Relay
What is the line connecting all points where a compass needle points true north?
Agonic line
What are instructions written in a programming language
What process produces an electric current in a vacuum using a heated cathode?
thermionic emission