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basic electricity

Total questions: 53

Worksheet time: 18mins

Name
Class
Date
1.

The circuit shown on the picture above is an example of a /an _______

a)

Closed Circuit

b)

Open Circuit

2.

What can we do to make this circuit pictured a "closed circuit" so the bulb lights up?

a)

connect wire to the terminal

b)

disconnect the wire from the lightbulb

c)

screw in the lightbulb

d)

replace the battery

3.

What is the energy source for this circuit?

a)

Battery

b)

Electric socket

c)

Wires

d)

Light Bulb

4.
A flow of electrons through a conductor is called:
a)
A river
b)
A spark
c)
An electron flow
d)
A current
5.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
6.

The measure of electrical resistance

a)

watt

b)

ohm

c)

volt

d)

ampere

7.

The unit for electric current

a)

watt

b)

ohm

c)

volt

d)

ampere

8.
What does the switch do in a circuit?
a)
It supplies the power.
b)
It carries electricity.
c)
It opens and closes the circuit.
d)
It is an insulator.
9.

Electric current is the flow of ______________________

a)

electrons

b)

protons

c)

neutrons

d)

atoms

10.

(Look at picture for question)

a)

A device that restricts or opposes the flow of electrons

b)

A device that allows easy flow of electrons

c)

A device that can be used as a battery

d)

A device that measures electric current

11.

What form of energy is stored in a battery?

a)

chemical energy

b)

gravitational potential energy

c)

kinetic energy

d)

thermal energy

12.

What is the SI unit of resistance?

a)

ampere (A)

b)

ohm (Ω)

c)

volt (V)

d)

watt (W)

13.

It supplies energy in an electric circuit.

a)

load

b)

switch

c)

voltage source

d)

conducting wires

14.

What is the SI unit of voltage?

a)

ampere

b)

ohm

c)

volt

d)

watt

15.

2. Which of the following properties of materials does NOT affect resistance?

a)

A. length

b)

B. thickness

c)

C. temperature

d)

D. strength of the material

16.

What is the unit of insulation resistance?

a)

Ohm

b)

Mega ohm

c)

Mili ohm

d)

Ohm meter

17.
Alternating current is what we find at our wall outlet.
a)
True
b)
False
18.

Direct current is what we find in the Automobile.

a)
True
b)
False
19.
Which voltage is this symbol?
a)
AC
b)
DC
c)
ACC
d)
DCC
20.
Which of the following is negative charge?
a)
Proton
b)
Neutron
c)
Electron
d)
All of the above
21.
Which of the following is positive charge?
a)
Proton
b)
Neutron
c)
Electron
d)
All of the above
22.
Which of the following is neutral charge?
a)
Proton
b)
Neutron
c)
Electron
d)
All of the above
23.
Which part of an atom orbits the atom?
a)
Neutron
b)
Nucleus
c)
Electron
d)
Electric
24.
What is electricity?
a)
Flow of electrons
b)
Transfer of nucleus
c)
Adding a neutron to an atom
d)
Electrons fading away
25.
Which of the following is an insulator?
a)
Copper
b)
Aluminum
c)
Metal
d)
Rubber
26.
A insulator:
a)
Allows the flow of electricity
b)
Resists the flow of electricity
27.
A conductor:
a)
Allows the flow of electricity
b)
Resists the flow of electricity
28.

What type of charge does an electron have?

a)

Positive

b)

Negative

c)

No charge

29.

Fluid expansion is a way to sense temperature change.

a)

True

b)

False

30.
The symbol for voltage is: 
a)
Vo
b)
V
c)
W
d)
Amp
31.
Current is measured in:
a)
Ohms
b)
Voltage
c)
Amperes
d)
Watts
32.
 An AA battery holder with 6 cells provides how many total volts?
a)
1.5V
b)
6V
c)
9V
d)
3V
33.
A tool that measures voltage, current, resistance, and continuity is called a:
a)
voltmeter
b)
resistor
c)
multimeter
d)
screwdriver
34.
Continuity measures:
a)
The voltage between two points.
b)
The resistance between two points.
c)
The wattage between two points.
d)
Whether or not there is a current between two points.
35.
In all electronics applications you should never:
a)
Connect power directly to ground.
b)
Offer resistance to the flow of electricity.
c)
Reverse the probes of the multimeter.
d)
none of the above
36.

The thickness of a wire is called is:

a)
resistance
b)
amperage
c)
thickness
d)
guage
37.

Which color wire is commonly used for ground?

a)
red
b)
black
c)
green 
d)
yellow
38.

When there is a break in the circuit and the current could not pass through, the circuit is ________.

a)

closed

b)

shorted

c)

grounded

d)

open

39.

Which is synchronous alternating-current machine that changes mechanical power into electrical power?

a)

Dynamo

b)

Motor

c)

Alternator

d)

Lathe machine

40.

Which is the kinetic energy of falling water?

a)

Thermo energy

b)

Hydro energy

c)

Solar energy

d)

Mechanical energy

41.

Which statement is TRUE?

a)

Bigger size of wire has higher resistance.

b)

Bigger size of wire has lower resistance.

c)

Long wire has lesser resistance.

d)

Short wire has higher resistance.

42.

A material that allows the free flow of electric charges.

a)

Conductor

b)

Insulator

c)

Semiconductor

43.

What type of circuit is shown in the picture?

a)

Series circuit

b)

Parallel circuit

c)

Open circuit

44.

The three basic components of a circuit are

a)

load, energy source, magnets

b)

wires, load, solenoid

c)

wires, load, energy source

d)

energy source, iron core, load

45.

In a series circuit, if one device goes out, the other devices

a)

remain on

b)

go out

46.

The magnetic field is strongest at

a)

the north pole only

b)

in the middle

c)

at both poles

d)

at the south pole only

47.

What type of circuit is shown in the picture?

a)

parallel circuit

b)

open circuit

c)

series circuit

48.

What type of material does not allow electrons to flow easily?

a)

Semiconductor

b)

Conductor

c)

Insulator

d)

Circuit

49.

What is a circuit?

a)

The buildup of electric charges

b)

A complete, closed path through which electric charges flow

c)

Opposition to the flow of charge

d)

Electric potential

50.

Electricity is:

a)

Flowing electrons

b)

Still electrons

c)

Voltage x Wattage

d)

Amps x Watts

51.
Choose the true statement below concerning DC currents:
a)
DC stands for Direct Computing and electrons flow in multiple pathways
b)
DC stands for direct current and electrons flow in multiple directions
c)
DC stands for direct current and the electrons do not flow
d)
DC stands for direct current and the electrons flow in only one direction
52.

Resistance is measured in:

a)

Volts

b)

Amps

c)

Ohms

d)

Watts

53.

Current can only flow if there is a/an

a)

Open circuit

b)

Closed circuit

c)

Parallel circuit

d)

Short circuit

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