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Wk 11 - EL1 Finals (Official)

Total questions: 50

Worksheet time: 46mins

Name
Class
Date
1.

Electricity is a flow of _ from atom to atom

a)

Electrons

b)

Protons

c)

Nuetrons

d)

Nucleus

2.

Rings that allow the electrons to orbit around the nucleus are called...

a)

Valence Rings

b)

Free Rings

c)

Orbit Rings

d)

Electron Rings

3.

Allows electrons to flow easily, an example is metal.

a)

Conductor

b)

Insulator

c)

Semiconductor

d)

Free Electrons

4.

The image describes what type of atom?

a)

Conductor

b)

Insulator

c)

Semiconductor

d)

Free Electrons

5.

An atom with excessive electrons

a)

Negative Ion

b)

Positive Ion

c)

Balanced Ion

d)

Insulator

6.

One word for voltage

a)

Pressure

b)

Flow

c)

Resistance

d)

Amperage

7.

Current is measured in

a)

Watts

b)

Volts

c)

Ohms

d)

Amps

8.

The relationship between Voltage(E), Amperage (I), and Resistance (R) are know as...

a)

Ohms Law

b)

Kirchoffs Law

c)

Electron Law

d)

Field Law

9.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

10.

The type of electricity derived from a battery is

a)

Alternating Wattage

b)

Alternating Current

c)

Direct Wattage

d)

Direct Current

11.
The formula for calculating current is:
a)
I=E/R
b)
R=E/I
c)
I=E*R
d)
W=I*R
12.
Which of the following does not effect the resistance in a wire?
a)
temperature
b)
insulation
c)
diameter
d)
material
13.
Two like charges:
a)
 neutralize each other.
b)
repel each other. 
c)
must be neutrons. 
d)
attract each other.
14.
Plastic is an example of _______.
a)
an insulator
b)
a conductor
15.

How many terminals are there in a transistor....?

a)

1

b)

2

c)

3

d)

4

16.

LED means

a)

Light Emitting Display

b)

Light Emitting Diode

c)

Laser Emitting Display

d)

Laser Emitting Diode

17.

Symbol of LED

a)
b)
c)
d)

None of these

18.

What happens to the current in a series circuit?

a)

The current stays the same

b)

The current is added

c)

The current is reduced

d)

The current is split between the light bulbs

19.
If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?
a)
5 V
b)
12 V
c)
0.2 V
d)
20 V
20.

Total circuit voltage drop equals....

a)

Source Voltage

b)

Circuit resistance

c)

The amperage of the circuit

d)

Load resistance

21.

With the switch open, the 1st bulb has voltage drop of 0v. The 2 bulbs reads a voltage drop of 0v

a)

The 2nd bulb is open

b)

The 1st bulb is open

c)

This is normal

d)

Both bulbs are faulty

22.

What does the electronic schematic symbol shown represent?

a)

light bulb

b)

cell

c)

battery

d)

resistor

23.

What type of measurement is taken parallel to load, so that the circuit is not effected?

a)

Current

b)

Resistance

c)

Temperature

d)

Voltage

24.

What type of measurement requires the component to be isolated and power removed?

a)

Resistance

b)

Voltage

c)

Current

d)

Frequency

25.

What does the electronic schematic symbol shown represent?

a)

Wire

b)

Resistor

c)

Battery

d)

Switch

26.
Which best describes a simple series circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from the switch.
c)
Electricity flows along many pathways.
d)
The flow of electricity comes from the light bulb.
27.
Amperage is the same at all points in a _________________ circuit.
a)
series
b)
complex
c)
parallel
d)
open
28.

Total resistance is less than the lowest resistance in a _________________ circuit.

a)

series

b)

complex

c)

parallel

d)

closed

29.

All are true about a parallel circuit, except

a)

Amperage is the same throughout an individual branch

b)

Total resistance is more than the lowest resistance

c)

The amperage that exits the positive side of the battery equals the amperage the enters the negative side

d)

Voltage going into each branch equals source voltage

30.

When a resistor in a series circuit is replaced by another resistor with an increased resistance value, the total circuit current will __________.

a)

stay the same

b)

decrease

c)

increase

d)

double in value

31.

As you continue to add lightbulbs in series, what happens?

a)

The bulbs get brighter

b)

The bulbs get dimmer

c)

The bulbs remain the same brightness

d)

The bulbs explode and shards of glass get everywhere

32.
If you increase the voltage of a circuit, what happens?
a)
Current decreases
b)
Current increases
c)
Electrons disappear
d)
Bulbs get dimmer
33.
As the number of resistors increase, the total resistance ___________ and the total current ____________
a)
Increase, decrease
b)
Decrease, increase
c)
Increase, increase
d)
Decrease, decrease
34.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
35.

Photoconductivity is an ability exhibited by a photoresistor. What does this mean?

a)

You can take photographs with this device

b)

It can conduct photos

c)

The amount of resistance provided decreases as there is more light detected

d)

The amount of resistance provided increases as there is more light detected

36.

Q1- The component shown in figure  is :-

a)

Inductor

b)

Capacitor

c)

Transistor

d)

Resistor

37.

In the figure the missing component is .............:

a)

Diode

b)

Fuse

c)

Resistor

d)

Transistor

38.

The function of the CAPACITOR is .................

a)

Store magnetic energy

b)

Store electrical energy

c)

Allow current to flow in one direction

d)

Limit current flow

39.

The component shown in the figure next is...............

a)

Resistor

b)

Zener diode

c)

PNP transistor

d)

NPN Transistor

40.

The image is the symbol for a:

a)

LED

b)

resistor

c)

diode

d)

conductor

41.

The following is a symbol for a:

a)

LED

b)

photocell

c)

diode

d)

source

42.
Electrons have a positive charge.
a)
True
b)
False
43.

The following is a symbol for a:

a)

resistor

b)

diode

c)

transistor

d)

potentiometer

44.

The image is a symbol for a:

a)

transistor

b)

LED

c)

diode

d)

potentiometer

45.

A material that does NOT let electricity pass through it is called ...

a)

An electrical conductor

b)

An electrical insulator

c)

An electrical source

d)

An electric appliance

46.

Which of the symbols represents current in an electrical circuit?

a)

i

b)

c

c)

e

d)

r

47.
What does this symbol represent?
a)
A switch
b)
A light 
c)
A battery
d)
A splice
48.
Fuses are rated in _______________________.
a)
volts
b)
size
c)
shape
d)
amps
49.
In electrical terms, AC stands for
a)
air conditioning
b)
alternating current
c)
altered current
d)
all clear
50.
When you connect the meter in line in a circuit, you are testing ______
a)
Watts
b)
Voltage drop
c)
Resistance
d)
Amperage

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