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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
unlike charges
B
like charges
C
charges of unequal magnitude
D
charges of equal magnitude
2) repelling forces occur between
A
charges of unequal magnitude
B
like charges
C
charges of equal magnitude
D
unlike charges
3) Two protons (+ charges) would do what if you brought them together?
A
become smaller
B
attract
C
explode
D
repel
4) A positive and a negative charge would do what when brought together?
A
get weaker
B
explode
C
repel
D
attract
5) materials that allow charges to move freely are called
A
motors
B
conductors
C
insulators
D
resistors
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
the constant (K) and mass
B
charge and distance
C
charge and mass
D
mass and distance
8) gravitational field strength depends on
A
charge and distance
B
the gravitational constant (G) and mass
C
mass and distance
D
charge and mass
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
Both require a distance to find the force
C
Newton's Law is used for large masses and mass only effects Newton's Law
D
Coulomb's Law is used for extremely small bodies and charge only effects Coulomb's Law
10) A material that slows down or resists the flow of electrical current can be described as a
A
Conductor
B
Metal
C
Insulator
D
the definition of Power
11) A circuit with a continuous path for the flow of charges is called
A
a schematic diagram
B
an open circuit
C
a short circuit
D
A closed circuit
12) A 9.0V battery creates an electrical current of 2.3A. What is the resistance of the circuit?
A
20.7ohms
B
6.7ohms
C
0.26ohms
D
3.9ohms
13) A circuit with a break or opening in the path is said to be
A
an open circuit
B
a closed circuit
C
a short circuit
D
a schematic diagram
14) Find the voltage in a circuit that has 4.5ohms of resistance and 2.1A passing through it
A
9.5V
B
0.47V
C
2.4V
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
4.1A
C
0.58A
D
3.9A
16) What are the symbols for voltage, current, and resistance?
A
Voltage-V, Current-C, Resistance-R
B
Voltage-V, Current-A, Resistance-R
C
Voltage-V, Current- I, Resistance-R
D
Voltage-V, Current-A, Resistance-ohm
17) What are the units for Voltage, current, and resistance?
A
Voltage-V, Current-A, Resistance-R
B
Voltage-V, Current-A, Resistance-ohm
C
Voltage-V, Current- I, Resistance-R
D
Voltage-V, Current-C, Resistance-R
18) What is the symbol and unit for Power?
A
Symbol P, Unit W
B
Symbol P, unit N
C
Symbol P, unit Ohm
D
Symbol W, Unit P
19) The power ratings on lightbulbs measure what?
A
density of charges
B
how hard it is for the battery to work
C
the rate they give off heat and light
D
the voltage they require
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
4.0W
D
25W
*select an answer for all questions
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