The X -Ray C ircuit (Chapter 4) Questions And Answers An x -ray tube is an example of current flow in a/an (a. gas, b. vacuum, c. metallic conductor, d. ionic solution) - ANS-b. vacuum Which of the following increases or decreases voltage by a fixed amount? (capacitor, rheostat, diode, transformer) - ANS-transformer Electrostatic force between charges is directly proportional to product of quantities and inversely proportional to square of distance between them is _________ law - ANS-Coulombs law A ______ will vary by resistance. - ANS-rheostat In a metallic conductor electrons move on _________ surface - ANS-external Nearly all discussion of electricity deals with the movement of ___ ___ charges - ANS-negative Which of the following conditions provide the least resistance? a. glass, b. long conductor, c. large cross -
sectional area, d. high temp of conductor - ANS-large cross -sectional area The potential difference that will maintain a current of 1 ampere in a circuit with a resistance of 1 ohm is (a. ampere, b. volt, c. ohm, d. coulomb) - ANS-volt The removal of electrons from an object by rubbing it with another is electrification by (a. contact, b. friction, c. induction, d. ground ing) - ANS-friction Which of the following allows electrons to flow in only one direction? (a. transformer, b. rheostat, c. battery, d. diode) - ANS-diode Which of the following is a unit of measure of current? (a. ampere, b. volt, c. coulomb, d. ohm) - ANS-
ampere Magnetic flux is (a. magnetic material, b. groups of smaller magnets, c. curved lines of force in space, d. the magnetizing of other materials) - ANS-curved lines of force in space What is the magnetic classification of materials weakly attrac ted to magnets? - ANS-paramagnetic The unit of measure for electric potential is - ANS-"V" volt The study of stationary electric charges is (a. electrostatics, b. electrodynamics, c. electrification, d. contact) - ANS-electrostatics The study of electric charges in motion is (a. electrostatics, b. electrodynamics, c. electrification, d. contact) - ANS-Electrodynamics What is referred to (or known) as electricity? - ANS-electrodynamics What is the fundamental unit of electricity? - ANS-Coulomb Copper and Gold are materials that have large number of free electrons and therefore are called - ANS-
conductors Glass and plastic are materials that have few free electrons and therefore are called - ANS-insulators What is the law that state s unlike charges attract and like charges repel? - ANS-law of electrostatics
sectional area, d. high temp of conductor - ANS-large cross -sectional area The potential difference that will maintain a current of 1 ampere in a circuit with a resistance of 1 ohm is (a. ampere, b. volt, c. ohm, d. coulomb) - ANS-volt The removal of electrons from an object by rubbing it with another is electrification by (a. contact, b. friction, c. induction, d. ground ing) - ANS-friction Which of the following allows electrons to flow in only one direction? (a. transformer, b. rheostat, c. battery, d. diode) - ANS-diode Which of the following is a unit of measure of current? (a. ampere, b. volt, c. coulomb, d. ohm) - ANS-
ampere Magnetic flux is (a. magnetic material, b. groups of smaller magnets, c. curved lines of force in space, d. the magnetizing of other materials) - ANS-curved lines of force in space What is the magnetic classification of materials weakly attrac ted to magnets? - ANS-paramagnetic The unit of measure for electric potential is - ANS-"V" volt The study of stationary electric charges is (a. electrostatics, b. electrodynamics, c. electrification, d. contact) - ANS-electrostatics The study of electric charges in motion is (a. electrostatics, b. electrodynamics, c. electrification, d. contact) - ANS-Electrodynamics What is referred to (or known) as electricity? - ANS-electrodynamics What is the fundamental unit of electricity? - ANS-Coulomb Copper and Gold are materials that have large number of free electrons and therefore are called - ANS-
conductors Glass and plastic are materials that have few free electrons and therefore are called - ANS-insulators What is the law that state s unlike charges attract and like charges repel? - ANS-law of electrostatics
