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Fill In The Blanks



 This activity contains 13 questions.

Question 1.
The ___ represents a negative charge in an atom.

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electron
proton
neutron
None of the above
End of Question 1


Question 2.
___ make electric current possible.

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Protons
Neutrons
Shells
Free electrons
End of Question 2


Question 3.
An atom with more electrons than protons is ___.

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a positive ion
a balanced atom
a negative ion
not possible
End of Question 3


Question 4.
The unit for voltage is the ___ and the symbol for voltage is ___.

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joule, V
coulomb, J
volt, Q
volt, V
End of Question 4


Question 5.
The unit for resistance is the ___ and the symbol for resistance is ___.

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ampere, R
ohm, R
volt, Q
ohm, J
End of Question 5


Question 6.
All resistors can be placed into one of two main categories: ___ or ___.

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carbon film, metal film
fixed, variable
wire wound, carbon-composition
insulator, semiconductor
End of Question 6


Question 7.
A ___ resistor has color bands of yellow, violet, yellow, gold.

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470 omega.gif 5%
5.7 Momega.gif 5%
37 komega.gif 5%
470 komega.gif 5%
End of Question 7


Question 8.
A rheostat is ___.

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a three-terminal device that controls current
a two-terminal device that controls current
a two-terminal device that divides voltage
a three-terminal device that divides voltage
End of Question 8


Question 9.
Fuses and circuit breakers are designed to ___ when excessive current flows.

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buzz
illuminate
close
open
End of Question 9


Question 10.
A connection to the frame of a piece of electronic equipment is sometimes referred to as ___ ground.

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a chassis
an earth
a circuit
either chassis or circuit
End of Question 10


Question 11.
The ___ is placed in series with the flow of current.

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voltmeter
ammeter
ohmmeter
wattmeter
End of Question 11


Question 12.
A stable atom has _______________ electrons in the valence shell.

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4
8
2
0
End of Question 12


Question 13.
Voltage is _________.

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the opposition to the flow of current
the movement of free electrons
the force that exists between charged particles
the force that causes water to flow
End of Question 13





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