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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
protons and neutrons
B
electrons and neutrons
C
none of the choices
D
protons and electrons
2) Two charges are separated by a certain distance. If the magnitude of each charge is doubled, the force on each charge is
A
doubled
B
halved
C
quadrupled
D
tripled
3) The net charge of a neutral atom
A
is zero
B
usually cannot be determined
C
depends only on the number of protons it has
D
depends only on the number of electrons it has
4) Bring a charged object near a conductor and then momentarily touch the conductor. This demonstrates charge by
A
induction
B
friction
C
polarization
D
deduction
5) A difference between electrical forces and gravitational forces is that electrical forces include
A
separation distance
B
infinite range
C
inverse square law
D
repulsive interactions
6) Conservation of charge means that
A
electrons by themselves can be neither created nor destroyed.
B
the total amount of charge in the universe is constant.
C
all of the choices
D
charge can be neither created nor destroyed.
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
18 N
B
6.0 N
C
2.0 N
D
3.0 N
9) Electrical polarization occurs when
A
an electron is at a different location than a proton.
B
charge distribution in a neutral molecule separates.
C
an atom vibrates in a single direction.
D
the electron and the proton are on different sides of an atom.
10) A positive ion has
A
a +1 charge always.
B
one proton.
C
more electrons than protons.
D
more protons than electrons.
*select an answer for all questions
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