Physics 122 Exam 1 Questions With
Complete Answers
electric force - ANSWER field force. do not need physical contact. magnitude of the elctric
field force depnds on distance (decreases with separation) *always positive
electric interaction - ANSWER long range interaction between objects that carry electric
charge
electric charge - ANSWER not a permanent property. object interacts electrically with other
objects that carry charge
charge carrier - ANSWER microscopic object that carries an electric charge. arrange
themselves in such a way as to produce uncharged objects
neutral - ANSWER do not interact electrically with other neutral objects, but do interact with
charged objects
like charges - ANSWER repel
opposite charges - ANSWER attract
, types of charges - ANSWER there are two and only two types of charge. the two types of
charge never appear independently of each other. when two neutral objects are rubbed
together and then separated they aquire opposite charges in equal amounts.
transfer of charge - ANSWER bringing two objects in contact
insulator - ANSWER charge does not flow. it remains where it is placed. charge carriers cannot
flow easily.
conductors - ANSWER charge carriers flow through easily. any charge transferred to the
conductor spreads over the conductor and any other conductors it is in contact with. metals
are the only solid conductors at room temp.
any charge resides on the outside of conducting objects
grounding - ANSWER earth is a good conductor except for the outer layer of soil. when a
charged conducting obejct is connected to the earth is grounds the object. earth absorbs or
supplies charge carriers. grounded object is left with no surplus charge of either type.
electron - ANSWER charge is an inherent property of the e-. charge in transferred in e-.
charge on e-=elementary charge
ions - ANSWER unequal numbers of protons and electrons in an atom
Complete Answers
electric force - ANSWER field force. do not need physical contact. magnitude of the elctric
field force depnds on distance (decreases with separation) *always positive
electric interaction - ANSWER long range interaction between objects that carry electric
charge
electric charge - ANSWER not a permanent property. object interacts electrically with other
objects that carry charge
charge carrier - ANSWER microscopic object that carries an electric charge. arrange
themselves in such a way as to produce uncharged objects
neutral - ANSWER do not interact electrically with other neutral objects, but do interact with
charged objects
like charges - ANSWER repel
opposite charges - ANSWER attract
, types of charges - ANSWER there are two and only two types of charge. the two types of
charge never appear independently of each other. when two neutral objects are rubbed
together and then separated they aquire opposite charges in equal amounts.
transfer of charge - ANSWER bringing two objects in contact
insulator - ANSWER charge does not flow. it remains where it is placed. charge carriers cannot
flow easily.
conductors - ANSWER charge carriers flow through easily. any charge transferred to the
conductor spreads over the conductor and any other conductors it is in contact with. metals
are the only solid conductors at room temp.
any charge resides on the outside of conducting objects
grounding - ANSWER earth is a good conductor except for the outer layer of soil. when a
charged conducting obejct is connected to the earth is grounds the object. earth absorbs or
supplies charge carriers. grounded object is left with no surplus charge of either type.
electron - ANSWER charge is an inherent property of the e-. charge in transferred in e-.
charge on e-=elementary charge
ions - ANSWER unequal numbers of protons and electrons in an atom
