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วิชาการใช้พลังงานไฟฟ้าในชีวิตประจำวัน

Total questions: 30

Worksheet time: 10mins

Name
Class
Date
1.

An instrument which detects electric current is known as

a)

voltmeter

b)

Watt meter

c)

Ammeter

d)

galvanometer

2.
After you rub a balloon on your hair, what charge does your hair have?
a)
Positive
b)
Negative
c)
Neutral
3.
When a glass rod is rubbed with silk and the glass rod becomes positively charged, what happens to the electrons?
a)
they are removed from the rod
b)
they are added to the rod
4.

Which electrostatics phenomena is shown in this picture?

a)

Contact

b)

Friction

c)

Grounding

d)

Induction

5.

What is the end result of charging by friction?

a)

Both object have the same charge, so they will attract one another

b)

Both object have the same charge, so they will repel one another

c)

Both object have the opposite charge, so they will attract one another

d)

Both object have the opposite charge, so they will repel one another

6.
Static electricity is:
a)
electricity flowing in a wire
b)
the buildup of electric charges on an object
c)
when protons move between objects
7.
Which is an example of static dischage?
a)
a motor
b)
lightning
c)
thunder
d)
insulators
8.
What is a circuit?
a)
A pathway that electricity flows in. It has a load, wire, and a taco
b)
A pathway that protons flow in. It has an output device , wire, and a power source.
c)
A pathway that electricity flows in. It has an output device, wire, and a power source.
d)
A pathway that electricity flows in. It has a load and wire.
9.
Choose the number of the picture that shows an unsuccessful circuit and the correct explanation as to why it was unsuccessful.
a)
1 because it is not a closed circuit
b)
2 because the circuit is open
c)
3 because there are too many light bulbs
d)
4 because there are too many batteries
10.
Which device would have the main function of converting electrical energy into kinetic energy?
a)
light bulb
b)
remote control car
c)
TV
d)
toaster
11.
Study the picture.  How many pieces of wire are needed to close the circuit including these 3 items (battery, motor and switch)?
a)
2
b)
3
c)
5
d)
4
12.
Which of the following forms of energy are BEST represented by a lit light bulb? 
a)
chemical, light and potential
b)
heat, kinetic and light
c)
electrical, kinetic and potential
d)
electrical, light and heat
13.
An insulator is....?
a)
material that current can pass through easily
b)
material that current cannot pass through easily
c)
magnet
d)
static electricity
14.
A conductor is...?
a)
material that current can pass through easily
b)
material that current cannot pass through easily
c)
magnet
d)
electric current
15.
This circuit is .....?
a)
open
b)
parallel
c)
closed
d)
chris barton
16.
This circuit is...?
a)
open
b)
closed
c)
parallel
d)
all of the above
17.

Particles with the _________ charge are attracted to each other.

a)

same

b)

opposite

18.

Which of the following is a good conductor?

a)

gold

b)

wood

c)

ceramic

d)

plastic

19.

When a switch is _________, the electric current can flow through the circuit.

a)

open

b)

closed

20.

If a switch is ______, a light bulb will not light.

a)

open

b)

closed

21.

________ electricity is the buildup of charged particles in a material.

a)

current

b)

charge

c)

static

d)

circuit

22.

Usually, the electric charge that moves is the _______. They can move from one object to another, causing the material to take on a temporary change.

a)

electron

b)

proton

c)

static

23.
What kind of energy does this device use?
a)

Mechanical

b)
Electrical
c)
Thermal
d)
Chemical
24.

What energy is needed for this fan to work ?

a)

mechanical

b)

electrical

c)

sound

d)

thermal

25.
Which of the following uses electricity for energy? 
a)

a Playstation or X-Box

b)
a street light
c)

a backpack

d)
 a wind-up toy
26.

What is the definition of ELECTRICAL energy?

a)

Energy from batteries or an electrical current from an outlet/socket

b)

Something that moves

c)

energy is something that is always happening

27.

which of the following is not an example of mechanical energy?

a)
b)
c)
d)
28.

Which is an example of electrical energy?

a)
b)
c)
d)
29.
Which object requires only mechanical energy to perform its main function?
a)
A
b)
B
c)
C
d)
D
30.

Pablo wants to know what kind of energy a circuit starts off using if it needs a battery to work. What kind of energy is it?

a)

mechanical

b)

electical

c)

light

d)

thermal

e)

sound

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