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Ch. 20-Part 2
Test Description: Electricity
Instructions: Answer all questions to get your test result.
1) As voltage _______________, more electrical potential energy is available to be transformed into other forms of energy.
A
stays the same
B
increases
C
increases and decreases
D
decreases
2) individual electrons move ___________ in an electric circuit constantly colliding moving electric charge from negative to positive terminals
A
no where
B
quickly
C
slowly
D
slowly than quickly than back to slowly
3) Batteries supply energy to an electric current by converting ______________energy to electric potential energy.
A
kinetic
B
chemical
C
electrical
D
thermal
4) Once _______________ are used up such as in a battery, electrons can no longer move through the circuits.
A
conductors
B
circuits
C
chemicals
D
insulators
5) the measure of how difficult it is for electrons to flow through a material
A
electric discharge
B
voltage
C
resistance
D
electric force
6) 'What are the units of current?
A
volts
B
amps
C
ohms
D
ions
7) What is the unit for resistance?
A
Ohms
B
amperes
C
volts
D
ions
8) _______________________ is one of the best electric conductors and creates least resistance to electron flow.
A
glass
B
aluminum
C
copper
D
wood
9) Electric charges will flow continuously only through a closed conducting loop called a __________________.
A
insulator
B
circuit
C
battery
D
conductor
10) The amount of electrical energy converted to thermal energy in a wire increases as the _______________ of the wire increases.
A
force
B
static charge
C
thickness
D
resistance
*select an answer for all questions
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