What is a vacuum tube with three electrodes?

(a)  

What device adds resistance to a circuit?

(a)  

What semiconductor device produces light when a direct current is applied?

(a)  

What material allows current to flow through it with no resistance?

(a)  

What are pieces of information stored on computers called?

(a)  

What are the instructions written in a programming language?

(a)  

What process produces an electric current in a vacuum using a heated cathode?

(a)  

What was America's first mass-produced computer?

(a)  

What is the rate of charge flow?

(a)  

What electronic device processes information using electric currents?

(a)  

What is the general term for any device that transforms the energy of an electric current into another useful form of energy?

(a)  

What is a large, extremely powerful computer designed for rapidly performing complex calculations?

(a)  

What is an electric field with an even strength throughout?

(a)  

What device consists of one or more electrochemical cells connected as a single source of current?

(a)  

What communication device uses electromagnets to reproduce messages by means of audible clicks?

(a)  

What imaginary lines indicate the direction and strength of a magnetic field?

(a)  

What number system is based on powers of 16?

(a)  

What device turns sunlight into electricity?

(a)  

What is the most important cause of magnetism?

(a)  

What is the transfer of an electric charge by direct contact?

(a)  

How does electricity travel through an object?

(a)  

What is the SI unit of resistance?

(a)  

What device converts pulses of electricity into soundwaves?

(a)  

What is the SI unit of current?

(a)  

What is the branch of electricity that deals with the behavior and motion of electrons in a vacuum or in semiconductors?

(a)  

What is a device that uses electromagnetic induction to produce electricity?

(a)  

What is the electrostatic method of reproducing images on paper?

(a)  

What type of data can have any possible value within a specified range?

(a)  

Who built the first electrostatic generator?

(a)  

What is the largest computer network?

(a)  

What type of semiconductor lacks electrons?

(a)  

What type of large computers are used to store and retrieve vast amounts of data?

(a)  

What early device was used to store electric charge?

(a)  

What type of generator works by passing a conducting fluid such as an electrolyte through a magnetic field at very high speeds?

(a)  

What semiconductor device acts as a switch and amplifies weak signals?

(a)  

What is the positive terminal on a voltaic cell called?

(a)  

What is the stored information and instructions that direct a computer to perform certain tasks?

(a)  

What device uses a narrow strip of metal in a protective, insulated case to limit current through a circuit?

(a)  

What is the process of replacing the atoms of a semiconductor with atoms from another element or leaving the holes?

(a)  

What type of electrochemical cell is designed to be recharged?

(a)  

What device produces a magnetic field when an electric current passes through it?

(a)  

What device converts electricity into a back and forth motion?

(a)  

What is the smallest directly accessible unit of data in a computer?

(a)  

What is the SI unit of electric charge?

(a)  

What is the most important device for converting electricity into motion?

(a)  

What device increases or decreases the voltage of an alternating current by using electromagnetic induction?

(a)  

What imaginary line circles the earth halfway between the two magnetic poles (be specific)?

(a)  

What part of the computer controls all the other parts of the computer?

(a)  

What device generates a binary output that is based on one or more binary inputs?

(a)  

What is the extent of earth's magnetic field into space?

(a)  

What type of material has several unpaired electrons per atom, making them very strongly attracted to magnets?

(a)  

What is the extent to which a material can channel lines of flux?

(a)  

What are the two regions of concentrated magnetism in a magnet?

(a)  

What is a device that opens or closes a circuit?

(a)  

What law states that the current flowing through a conductor is directly proportional to the voltage and inversely proportional to the resistance? (V=IR)

(a)  

What type of electrochemical cell is not designed to be recharged?

(a)  

What type of electric motor has an armature, field magnet, and commutator?

(a)  

What is a single chip that contains an entire CPU?

(a)  

What are the physical components of a computer called?

(a)