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3rd Q Exam Review
Test Description: Electricity
Instructions: Answer all questions to get your test result.
1) Attractive forces occur between
A
like charges
B
unlike charges
C
charges of equal magnitude
D
charges of unequal magnitude
2) repelling forces occur between
A
like charges
B
unlike charges
C
charges of unequal magnitude
D
charges of equal magnitude
3) Two protons (+ charges) would do what if you brought them together?
A
explode
B
repel
C
become smaller
D
attract
4) A positive and a negative charge would do what when brought together?
A
get weaker
B
attract
C
explode
D
repel
5) materials that allow charges to move freely are called
A
resistors
B
insulators
C
conductors
D
motors
6) If two charges are moved farther apart, the strength of the force between the charges would
A
increase
B
stay the same
C
decrease
D
double
7) Electric field strength depends on
A
mass and distance
B
charge and mass
C
the constant (K) and mass
D
charge and distance
8) gravitational field strength depends on
A
charge and mass
B
the gravitational constant (G) and mass
C
mass and distance
D
charge and distance
9) Which statement is FALSE regarding Newton's law of Universal Gravitation and Coulomb's Law
A
Both use mass to find the strength of both kinds of forces
B
Newton's Law is used for large masses and mass only effects Newton's Law
C
Coulomb's Law is used for extremely small bodies and charge only effects Coulomb's Law
D
Both require a distance to find the force
10) A material that slows down or resists the flow of electrical current can be described as a
A
Conductor
B
the definition of Power
C
Metal
D
Insulator
11) A circuit with a continuous path for the flow of charges is called
A
a schematic diagram
B
a short circuit
C
A closed circuit
D
an open circuit
12) A 9.0V battery creates an electrical current of 2.3A. What is the resistance of the circuit?
A
0.26ohms
B
20.7ohms
C
3.9ohms
D
6.7ohms
13) A circuit with a break or opening in the path is said to be
A
a closed circuit
B
a short circuit
C
a schematic diagram
D
an open circuit
14) Find the voltage in a circuit that has 4.5ohms of resistance and 2.1A passing through it
A
2.4V
B
0.47V
C
9.5V
D
2.1V
15) A 1.5V battery is attached to a circuit with a resistance of 2.6ohms in it. Find the current
A
1.7A
B
3.9A
C
0.58A
D
4.1A
16) What are the symbols for voltage, current, and resistance?
A
Voltage-V, Current-C, Resistance-R
B
Voltage-V, Current-A, Resistance-ohm
C
Voltage-V, Current-A, Resistance-R
D
Voltage-V, Current- I, Resistance-R
17) What are the units for Voltage, current, and resistance?
A
Voltage-V, Current-A, Resistance-ohm
B
Voltage-V, Current- I, Resistance-R
C
Voltage-V, Current-C, Resistance-R
D
Voltage-V, Current-A, Resistance-R
18) What is the symbol and unit for Power?
A
Symbol P, unit N
B
Symbol P, unit Ohm
C
Symbol W, Unit P
D
Symbol P, Unit W
19) The power ratings on lightbulbs measure what?
A
how hard it is for the battery to work
B
the voltage they require
C
density of charges
D
the rate they give off heat and light
20) Find the power in a bulb that has a 10.0V across it when a current of 2.5A passes through it
A
25ohms
B
0.25W
C
25W
D
4.0W
*select an answer for all questions
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