Computers
What is a small, relatively inexpensive computer designed for use by one user at a time?
What is a personal computer
What is the SI unit of electric charge?
What is a coulomb
What early device was developed to store electric charge?
What is a Leyden jar.
What process produces an electric current in a vacuum using a heated cathode?
What is thermionic emission.
What communication device uses electromagnets to reproduce messages by means of audible clicks?
What is a telegraph
What is a large, extremely powerful computer designed for rapidly performing complex calculations?
What is a supercomputer
A device that uses electromagnetic induction to produce electricity is a(n) ? .
generator
What is a device that consists of one or more electrochemical cells connected as a single source of current?
What is a battery
What are the imaginary lines that indicate the direction and strength of a magnetic field called?
What are lines of flux
What is a semiconductor device that produces light when a direct current is applied?
What is a light-emitting diode
What allows a computer to communicate with the outside world?
What is an input/output device
What is the rate of charge flow is called?
What is current
What is the general term for a device that transforms the energy of an electric current into another useful form of energy?
What is a load
What is an electric field with even strength throughout?
What is a uniform field
What electronic device processes information using electric circuits?
What is a computer
What part of a computer controls all other systems of the computer?
What is a central processing unit (CPU)
What is a device that produces a strong magnetic field when electricity passes through it ?
What is an electromagnet
What device converts pulses of electricity into sound waves?
What is a loudspeaker
What is the method of magnetism in which an object is permanently magnetized by stroking a magnet against the object?
What is magnetism by contact
What is a device that produces a single binary output based on one or more binary inputs?
What is a logic gate
What is the largest computer network?
What is the World Wide Web
What is a simple device that converts electricity to back-and-forth motion is ?
What is a solenoid
What device converts absorbed sunlight directly into electricity?
What is a photovoltaic cell
What type of generator works by passing a conducting fluid through a magnetic field?
What is a magnetohydrodynamic generator
What device uses a narrow strip of metal in a protective, insulated case to limit current through a circuit?
What is a fuse