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Robotics WK15 Electric

Total questions: 58

Worksheet time: 48mins

Name
Class
Date
1.

Match the following

a)

stores electricity and then discharges it back into the circuit when there is a drop in voltage

1.

capacitor

b)

takes an electrical signal and converts in into vibrations to produce audible sounds

2.

speaker

c)

used to measure current in a circuit

3.

ammeter

d)

converts electrical energy into light and heat

4.

lamp or bulb

e)

converts electrical energy into mechanical energy

5.

motor

2.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
3.
what is this symbol for?
a)

light bulb

b)

cell

c)

battery

d)

resistor

4.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
5.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
6.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
7.
This is the symbol for 
a)
An Ammeter
b)
A Voltmeter
c)
A Meter
d)
A Motor
8.
This is the symbol for a _____?
a)
Lamp
b)
Water wheel
c)
Loudspeaker
d)
Motor
9.
a)
Closed switch
b)
Push switch
c)
Trap door
d)
AC Power supply
10.

What is the following symbol represent?

a)

Wire

b)

Resistor

c)

Battery

d)

Switch

11.

This symbol represents a ..........

a)

Bulb

b)

Resistor

c)

Wire

d)

L.E.D.

12.

What symbol is this?

a)

speaker

b)

lamp

c)

antenna

d)

diode

13.
This is the symbol for 
a)
Variable resistor
b)
Thermistor
c)
Resistor
d)
Fuse
14.

More than one cell connected together, stores energy in a chemical form

a)

bicell

b)

battery

c)

fuse

d)

capacitor

15.

Stores electricity and then discharges it back into the circuit when there is a drop in voltage

a)

bicell

b)

battery

c)

fuse

d)

capacitor

16.

an electrical safety device that prevents too much current from flowing

a)

battery

b)

capacitor

c)

fuse

d)

ground

17.

The reference point in an electrical circuit from which voltages are measured, in a one battery circuit, the negative terminal is also called this

a)

battery

b)

capacitor

c)

fuse

d)

ground

18.

This converts electrical energy into light and heat, commonly used to check visually if a circuit is complete

a)

battery

b)

lamp or bulb

c)

ground

d)

motor

19.

Light-emitting diode, allows electricity to flow in one direction (it has polarity)

a)

Bulb or lamp

b)

motor

c)

LED

d)

ground

20.

What converts electrical energy into mechanical energy?

a)

motor

b)

generator

c)

ground

d)

lamp or bulb

21.

What converts mechanical energy into electrical energy?

a)

motor

b)

generator

c)

ground

d)

lamp or bulb

22.

What is an electromechanical transducer that allows the amount of opposition of the flow to change?

a)

motor

b)

Bulb or lamp

c)

variable resistor

d)

capacitor

23.

What is used to measure voltage in a circuit?

a)

kilometer

b)

ammeter

c)

voltmeter

d)

iamb or dactyl

24.

What opposes the flow of current, color bands are used to label the amount of resistance provided?

a)

motor

b)

reflector

c)

resistor

d)

dissentor

25.

What is used to measure current in a circuit?

a)

voltmeter

b)

ammeter

c)

arthrometer

d)

generator

26.

What is used to either complete or incomplete a circuit?

a)

a generator

b)

a switch

c)

a resistor

d)

a speaker

27.

What takes an electrical signal and converts it into vibrations to produce audible sound?

a)

bulb or lamp

b)

motor

c)

speaker

d)

generator

28.

What component with at least 3 terminals, can be used as an amplifier or switch?

a)

transformer

b)

transistor

c)

transitioner

d)

Togruta

29.

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

30.

What is resistor?

a)

Electrical component that is specially made to have a specific resistance

b)

The measure of the difference in how much energy the electrons receive to move around at different points in a circuit

c)

The flow of electrical charges

d)

The movement or presence of electrons

31.

Why is voltage is important?

a)

Because it is the pressure that causes the electrons to move around in a circuit and make the current flow and make appliances work

b)

To supply energy to be able to make the current flow in electric circuit and make appliances work

c)

To control the resistance in the circuit

d)

To reduce the current in the circuit

32.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
33.
The movement of electrons from atom to atom in a line results in a flow of _____. 
a)
amperage.
b)
electric current.
c)
electromagnetic connectors. 
34.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
35.

_________________ allow electricity to flow through easily.

a)

conductors

b)

construction

c)

constrictors

36.

______________ do not allow electricity to flow through easily.

a)

insults

b)

inside jokes

c)

insulators

37.

SI unit of current is

a)

ampere

b)

metre

c)

ohm

d)

volt

38.

What is needed for current to flow?

a)

light bulb

b)

multimeter

c)

resistance

d)

voltage

39.

SI unit of resistance is

a)

ampere

b)

metre

c)

ohm

d)

volt

40.
This is the symbol for a _____?
a)
Lamp
b)
Water wheel
c)
Loudspeaker
d)
Motor
41.
A series circuit has ____ path(s) that the electric current can take. 
a)
One
b)
Two 
c)
Three 
d)
Four
42.
The picture shows an electrical circuit. This circuit is a series circuit because: 
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current has more than one path to flow through
43.
Which circuit type makes a simple loop?
a)
series circuits
b)
parallel circuits
c)
ardurino circuits
44.
What characteristic of electric is measuring the difference between two points?
a)
current
b)
resistance
c)
voltage
d)
capacitance
45.
Which value is equivalent to one amp?
a)
1000 k Amps
b)
10 c Amps
c)
1000 m Amps
d)
0.01 k Amps
46.
What electrical component is often used to limit current to values tolerable to LED's?
a)
batteries
b)
capacitors
c)
inductors
d)
resistors
47.
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
48.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
49.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

50.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
51.
How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor
a)
12 volts
b)
24 volts
c)
1.3333
d)
48 volts
52.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps
53.
How do you calculate resistance?
a)
Voltage X Current
b)
Current ÷ Voltage
c)
Voltage ÷ Current
d)
Current X Amps
54.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

55.
What is the function of a fuse?
a)
To burn a wire.
b)
To replace a copper wire.
c)
To protect an electrical appliance.
d)
To make a complete circuit.
56.

39.0 mA is equivalent to

a)

0.00039 A

b)

0.0039 A

c)

0.039 A

d)

0.39 A

57.

When referring to an electrical circuit diagram, what point is considered to be at zero voltage?

a)

the switch

b)

the circuit breaker

c)

the resistor

d)

the ground

58.

A series circuit with 10 5ohm resistors will have a circuit resistance total of

a)

500 ohms

b)

555 ohms

c)

50 ohms

d)

55 ohms

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