PHY 2054 EXAM 1 CONCEPT QUESTIONS
AND ANSWERS WITH COMPLETE
SOLUTIONS | 100% CORRECT
Which one of the following statements is a consequence of charge being
conserved?
a) The difference between the number of positive and negative charges does not
change for a given system.
b) If you examine a system at different times, the total number of charges will
change.
c) Energy within the system is also conserved.
d) The positive and negative charges within a system must be quantized.
e) The numbers of electrons and protons for a given system cannot change. -
ANSWERS a) The difference between the number of positive and negative
charges does not change for a given system.
Which one of the following rules, laws, or principles describes how the net electric
charge of an isolated system undergoing any process remains constant?
a) Coulomb's principle
b) rule of seventy-two
c) principle of electric induction
d) law of conservation of electric charge
e) law of triboelectric synthesis - ANSWERS d) law of conservation of electric
charge
, A conductor that is initially electrically neutral is touched by a rod that has a net
positive charge. Which of the following statements describing the conductor after
the rod is removed is true?
a) The conductor will have a net positive charge.
b) The conductor will electrically neutral.
c) The conductor will have a net negative charge. - ANSWERS a) The conductor
will have a net positive charge.
Which of the following terms is used to describe a material that does not allow
electrons to easily move through it?
a) conductor
b) resistor
c) transformer
e) inductor
d) insulator - ANSWERS d) insulator
Which of the following statements describes an object being charged by
induction?
a) A glass rod is rubbed with silk.
b) A negatively-charged object is brought into contact with an initially uncharged
conductor. When they are separated, both objects are negatively charged.
c) A rubber rod is rubbed with animal fur.
d) A positively-charged object is brought near with an initially uncharged
conductor. The surface of the conductor becomes slightly negatively charged.
e) As you grab a door knob in the winter time, you feel a slight electric spark. -
ANSWERS d) A positively-charged object is brought near with an initially
AND ANSWERS WITH COMPLETE
SOLUTIONS | 100% CORRECT
Which one of the following statements is a consequence of charge being
conserved?
a) The difference between the number of positive and negative charges does not
change for a given system.
b) If you examine a system at different times, the total number of charges will
change.
c) Energy within the system is also conserved.
d) The positive and negative charges within a system must be quantized.
e) The numbers of electrons and protons for a given system cannot change. -
ANSWERS a) The difference between the number of positive and negative
charges does not change for a given system.
Which one of the following rules, laws, or principles describes how the net electric
charge of an isolated system undergoing any process remains constant?
a) Coulomb's principle
b) rule of seventy-two
c) principle of electric induction
d) law of conservation of electric charge
e) law of triboelectric synthesis - ANSWERS d) law of conservation of electric
charge
, A conductor that is initially electrically neutral is touched by a rod that has a net
positive charge. Which of the following statements describing the conductor after
the rod is removed is true?
a) The conductor will have a net positive charge.
b) The conductor will electrically neutral.
c) The conductor will have a net negative charge. - ANSWERS a) The conductor
will have a net positive charge.
Which of the following terms is used to describe a material that does not allow
electrons to easily move through it?
a) conductor
b) resistor
c) transformer
e) inductor
d) insulator - ANSWERS d) insulator
Which of the following statements describes an object being charged by
induction?
a) A glass rod is rubbed with silk.
b) A negatively-charged object is brought into contact with an initially uncharged
conductor. When they are separated, both objects are negatively charged.
c) A rubber rod is rubbed with animal fur.
d) A positively-charged object is brought near with an initially uncharged
conductor. The surface of the conductor becomes slightly negatively charged.
e) As you grab a door knob in the winter time, you feel a slight electric spark. -
ANSWERS d) A positively-charged object is brought near with an initially
