1) A proton has a positive charge. What is the charge of a particle that is attracted to a proton? a) Negative b) Positive c) Neutral d) Nucleus e) Proton f) Atom 2) A boy walks across a carpet on a cold day. Then he starts to touch a doorknob, and a spark jumps from his finger to the doorknob. If the boy’s hand has a negative charge, what is the charge on the area of the doorknob close to the boy’s hand? a) Negative b) Positive c) Neutral d) Electron e) Nucleus f) atom 3) During a storm, Lia saw a flash of lightning hit a tree. Later she observed that the lightning left a burn mark on the tree. Which of the following best describes what Lia can infer from what she saw? a) Static electricity can build up when water droplets rub against each other b) Electrical energy can be transformed into light and produce heat. c) Atoms usually have a neutral charge but can build up a positive or negative charge. d) Electric current flows steadily along a path. e) sound is faster  f) none of them 4) Suppose you rub a plastic object on a piece of fur, causing static electricity to form on both objects. The fur now has a positive charge. What happened to the plastic object? a) It lost protons. b) It lost electrons. c) It lost neutrons. d) It gained protons. e) It gained electrons. f) It gained neutrons  5) You rub a balloon on your hair on a dry day. Your hair is attracted to the balloon. Then, you bring the balloon near another balloon that has not been rubbed. How would you describe what happens to the two balloons? a) They repel one another. b) They attract one another. c) They neither attract nor repel one another d) Opposite charges make one balloon become larger and one become smaller. e) sometimes attract and sometimes repel f) balloon has no charge 6) ........... is the smallest building of any matter  a) atom b) Positive c) Neutral d) Electron e) Nucleus f) Proton 7) ........is the center of any atom  a) Negative b) Positive c) Neutral d) Electron e) Nucleus f) Proton 8) the total charges of the atom is ............ a) Negative b) Positive c) Neutral d) Electron e) Nucleus f) Proton 9) ................ numbers of the atom doesn't change a) Negative b) Positive c) Neutral d) Electron e) Nucleus f) Proton 10) ............. has net charge equal zero and we can find it inside the nucleus. a) Neutron b) Positive c) Neutral d) Electron e) Nucleus f) Proton 11) A form of energy that results from the interaction of charged particles, such as electrons or protons a) Electricity b) Static charge c) Charging by friction d) Electrostatic series e) Conductor f) Insulator 12) A process in which objects made from different materials rub against each other, producing a net static charge on each a) Electrostatic series b) Electricity c) Static charge d) Charging by friction e) Insulator f) Conductor 13) An electric charge that tends to stay on the surface of an object, rather than flowing away quickly a) Electrostatic series b) Electricity c) Static charge d) Charging by friction e) Insulator f) Conductor 14) A list of materials that have been arranged according to their ability to hold onto electrons a) Electrostatic series b) Electricity c) Static charge d) Charging by friction e) Insulator f) Conductor 15) A material in which electrons cannot move easily from one atom another a) Electrostatic series b) Electricity c) Static charge d) Charging by friction e) Insulator f) Conductor 16) The material in which electrons can move easily between atoms a) Electrostatic series b) Electricity c) Static charge d) Charging by friction e) Insulator f) Conductor 17) A property of the space around the charged object, where the effect of its charge can be felt by other objects a) Semiconductor b) Ground c) Electroscope d) Charging by contact e) Laws of electric charges f) Electric field 18) Laws that describe how to object interact electrically when one or both are charged a) Semiconductor b) Ground c) Electroscope d) Charging by contact e) Laws of electric charges f) Electric field 19) Generating the charge on a neutral object by touching it with the charged object a) Semiconductor b) Ground c) Electroscope d) Charging by contact e) Laws of electric charges f) Electric field 20) Device for detecting the presence of an electric charge a) Semiconductor b) Ground c) Electroscope d) Charging by contact e) Laws of electric charges f) Electric field 21) And object that can supply a very large number of electrons to, or can remove a very large number of electrons from, a charged object, thus neutralizing the object a) Semiconductor b) Ground c) Electroscope d) Charging by contact e) Laws of electric charges f) Electric field 22) The material in which electrons can move fairly well between atoms a) Semiconductor b) Ground c) Electroscope d) Charging by contact e) Laws of electric charges f) Electric field 23) A small device that detects and measures exposure to radiation a) Induced charge separation b) Ion c) Lightning rod d) Electrostatic precipitator e) Van de Graaff generator f) Radiation dosimeter 24) A device that accumulates very large charges a) Induced charge separation b) Ion c) Lightning rod d) Electrostatic precipitator e) Van de Graaff generator f) Radiation dosimeter 25) A type of cleaner that removes unwanted particles and liquid droplets from a flow of gas a) Induced charge separation b) Ion c) Lightning rod d) Electrostatic precipitator e) Van de Graaff generator f) Radiation dosimeter 26) Metal sphere or ball, attached to the highest part of a building and connected to the ground a) Induced charge separation b) Ion c) Lightning rod d) Electrostatic precipitator e) Van de Graaff generator f) Radiation dosimeter 27) Charged atom or group of atoms a) Induced charge separation b) Ion c) Lightning rod d) Electrostatic precipitator e) Van de Graaff generator f) Radiation dosimeter 28) The movement of electrons in a substance, caused by the electric field of the nearby charged object, without direct contact between the substance and the object a) Induced charge separation b) Ion c) Lightning rod d) Electrostatic precipitator e) Van de Graaff generator f) Radiation dosimeter 29) A cell that contains an electrolyte that is a paste a) Electric Circuit b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 30) A solution or paste that conducts charge a) Electric Circuit b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 31) One of two metal terminals in a cell or battery a) Electric Circuit b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 32) A connection of two or more cells a) Electric Circuit b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 33) A source of energy that generates an electric current by chemical reactions involving two different metals or metal compounds separated by a solution that is a conductor a) Electric Circuit b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 34) A closed path along which electrons that are powered by an energy source can flow a) Electric Circuit b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 35) A safety device that is placed in series with other circuits, which lead to appliances and outlets a) Circuit breaker  b) Electric Circuit c) Voltaic cell d) Battery e) Electrode f) Electrolyte 36) The rate at which an appliance uses electrical energy a) Electric Circuit b) Electric power c) Battery d) Electrode e) Electrolyte f) Watt 37) A unit of electrical power a) Electric Circuit b) Watt c) Battery d) Electrode e) Electric power  f) Dry cell 38) The energy that is used by an appliance at a given setting; determined by multiplying the power rating of an appliance by the length of time it is used a) Electrical energy b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 39) The ratio of useful energy output to total energy input, expressed as a percentage a) Electric Circuit b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) efficiency 40) Energy that is directly converted from the Sun into electricity a) Solar energy b) Voltaic cell c) Battery d) Electrode e) Electrolyte f) Dry cell 41) a continuous flow of electrons a) Conductor b) Electroscope c) Insulator d) Circuit e) Closed Circuit f) Electric Current 42) a complete circuit through which electrons (electric current) can flow a) Conductor b) Electroscope c) Insulator d) Circuit e) Closed Circuit f) Electric Current 43) a path through which electric current flows, transferring electric energy; consists of an energy source, a conducting path, and a receiver that converts the energy to another form such as light a) Conductor b) Electroscope c) Insulator d) Circuit e) Closed Circuit f) Electric Current 44) a material which electrons cannot move easily a) Conductor b) Electroscope c) Insulator d) Circuit e) Closed Circuit f) Electric Current 45) a device used to detect static charges a) Conductor b) Electroscope c) Insulator d) Circuit e) Closed Circuit f) Electric Current 46) a material which electrons can move easily a) Conductor b) Electroscope c) Insulator d) Circuit e) Closed Circuit f) Electric Current 47) an electric switch in which contact is made by pushing one or more flat metal blades between the jaws of spring clips a) Knife Switch b) Open Circuit c) Switch d) Circuit Diagram e) Parallel Circuit f) Series Circuit 48) an incomplete path for electric current to flow; electrons cannot flow through it a) Knife Switch b) Open Circuit c) Switch d) Circuit Diagram e) Parallel Circuit f) Series Circuit 49) a device that is used to control the current in a circuit a) Knife Switch b) Open Circuit c) Switch d) Circuit Diagram e) Parallel Circuit f) Series Circuit 50) a representation of an electrical circuit using symbols a) Knife Switch b) Open Circuit c) Switch d) Circuit Diagram e) Parallel Circuit f) Series Circuit 51) a circuit in which there is more than one path for a current to flow a) Knife Switch b) Open Circuit c) Switch d) Circuit Diagram e) Parallel Circuit f) Series Circuit 52) a circuit in which there is only one path for the current to flow a) Knife Switch b) Open Circuit c) Switch d) Circuit Diagram e) Parallel Circuit f) Series Circuit 53) the smallest particle into which an element can be divided and still be the same substance. a) Ampere b) Atom c) direct current d) electric charge e) electron f) neutron 54) unit of which current (I) is expressed (amp). a) Ampere b) Atom c) direct current d) electric charge e) electron f) neutron 55) electric current in which the charges always flow in the same direction. a) Ampere b) Atom c) direct current d) electric charge e) electron f) neutron 56) unit of measure for voltage. a) electric charge b) electron c) neutron d) nucleus e) proton f) volt 57) negatively charged subatomic particle found in an area outside the nucleus of an atom. a) electric charge b) electron c) neutron d) nucleus e) proton f) volt 58) the tiny, extremely dense, positively charged region in the center of the atom; made up of protons and neutrons. a) electric charge b) electron c) neutron d) nucleus e) proton f) volt 59) a particle of the nucleus of an atom that has no charge. a) electric charge b) electron c) neutron d) nucleus e) proton f) volt 60) the positively charged particles of the nucleus. a) electric charge b) electron c) neutron d) nucleus e) proton f) volt

Yassein_What Is Electricity?

by
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?