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Chapter 32 Electrostatics #1
Test Description: Review for the test
Instructions: Answer all questions to get your test result.
1) Atomic nuclei of almost all elements consist of
A
none of the choices
B
protons and electrons
C
protons and neutrons
D
electrons and neutrons
2) Two charges are separated by a certain distance. If the magnitude of each charge is doubled, the force on each charge is
A
halved
B
quadrupled
C
tripled
D
doubled
3) The net charge of a neutral atom
A
is zero
B
usually cannot be determined
C
depends only on the number of electrons it has
D
depends only on the number of protons it has
4) Bring a charged object near a conductor and then momentarily touch the conductor. This demonstrates charge by
A
induction
B
deduction
C
friction
D
polarization
5) A difference between electrical forces and gravitational forces is that electrical forces include
A
inverse square law
B
separation distance
C
infinite range
D
repulsive interactions
6) Conservation of charge means that
A
electrons by themselves can be neither created nor destroyed.
B
charge can be neither created nor destroyed.
C
the total amount of charge in the universe is constant.
D
all of the choices
7) A positive charge and a negative charge held near each other are released. As they move, the force on each particle
A
not enough information
B
increases
C
decreases
D
stays the same
8) Two charges separated a distance of 1.0 meter exert a 2-N force on each other. If the charges are pushed to a separation of 1/3 meter, the force on each charge will be
A
3.0 N
B
18 N
C
2.0 N
D
6.0 N
9) Electrical polarization occurs when
A
an atom vibrates in a single direction.
B
an electron is at a different location than a proton.
C
the electron and the proton are on different sides of an atom.
D
charge distribution in a neutral molecule separates.
10) A positive ion has
A
one proton.
B
more electrons than protons.
C
a +1 charge always.
D
more protons than electrons.
*select an answer for all questions
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