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Ch. 1 Electricity
Test Description: Basic components of electricity
Instructions: Answer all questions to get your test result.
1) The space around a particle through which an electric charge can exert force is.
A
A polarized field
B
An electric field
C
An atomic field
D
A resistance field
2) Which of these is a technology that makes use of static charges?
A
A copier machine
B
A clothes dryer
C
An electric outlet
D
Copper wiring
3) Before a flash of lightning, a positive charge builds up on the ground’s surface through
A
Induction
B
Contact charging
C
insulation
D
Conduction
4) An electric charge will move between two positions with different
A
Resistances
B
Currents
C
Potentials
D
Amperages
5) An electric current is a flow of
A
Charge
B
Resistance
C
Conduction
D
Insulation
6) Which of these would have the MOST resistance?
A
A long, thin, copper wire
B
A short, thick, copper wire
C
A long, thick, copper wire
D
A short, thin, copper wire
7) An Ampere is the standard unit of measure for:
A
Electric potential
B
Current
C
Resistance
D
Charge
8) An OHM is the standard unit of measure for:
A
Resistance
B
Electric potential
C
Charge
D
Current
9) A Volt is the standard unit of measure for:
A
Resistance
B
Charge
C
Voltage
D
Current
10) ._________________________is the amount electric potential energy per unit charge at a certain position in an electric field.
A
Ohm
B
volt
C
Electrical potential
D
Amp
11) An electric potential of one___________________________ is equal to one joule of energy per coulomb of charge.
A
electrical potential
B
charge
C
current
D
Volt
12) Which of the following affects resistance?
A
Insulator
B
Conductor
C
Battery
D
Temperature
13) Which of the DOES NOT affect resistance?
A
Insulation
B
Thickness
C
Length of wire
D
Type of wire
14) A current flows from a 6-volt battery through a wire with a resistance of 2 Ohms. Use Ohm’s Law to calculate the amperage.
A
3A
B
2A
C
2I
D
3ohms
15) Use Ohm’s Law to determine the voltage of a battery that sends 3 amps of current through a wire with a resistance of 2 Ohms.
A
12V
B
5V
C
6V
D
6A
16) A storage cell has the capability to do what?
A
be used once
B
sends electrons only out
C
recharge and be used again
17) A primary cell has two types....
A
dry cell and paste cell
B
storage cell and wet cell
C
Wet cell and dry cell
D
wet cell and paste cell
18) In Ohm's triangle which letter goes on top?
A
V
B
R
C
I
19) Steel allows an electric charge to pass through it easily. Steel is a good ___________________________.
A
Conductor
B
insulation
C
insulator
D
resistator
20) . Rubber does not easily allow a charge to pass through it. Rubber is a good. __________________________.
A
insulator
B
conductor
*select an answer for all questions
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