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Electricity

Total questions: 40

Worksheet time: 41mins

Name
Class
Date
1.

Particles related to electricity

a)

Proton

b)

Electron

c)

Neutron

d)

Nucleus

2.

Non moving electric charge is

a)

Current

b)

Electrostatic

c)

E

3.

Type of electric charges

a)

Positive

b)

Negative

c)

Relative

d)

Assertive

4.

Same electric charge will

a)

Attract

b)

Repel

c)

Explode

d)

Multiply

5.

Different electric charge will

a)

Attract

b)

Repel

c)

Explode

d)

Multiply

6.

Electric Field for Positive

a)

Inward

b)

Outward

c)

Left

d)

Right

7.

Electric Field for Negative

a)

Inward

b)

Outward

c)

Left

d)

Right

8.

Voltmeter must be connected in

a)

Series

b)

Parallel

9.

Ammeter must be connected in

a)

Series

b)

Parallel

10.

Resistance, R is determined by

a)

V+I

b)

V-I

c)

VxI

d)

V/I

11.

If current increase, voltage will

a)

increase

b)

decrease

c)

not change

12.

Voltage in series circuit at different position is

a)

Different

b)

Same

13.

Voltage in parallel circuit at different position is

a)

Different

b)

Same

14.

Current in parallel circuit at different position is

a)

Different

b)

Same

15.

Current in series circuit at different position is

a)

Different

b)

Same

16.

Magnet that always magnetic

a)

Permanent magnet

b)

Electromagnet

17.

Choose all ways to demagnetise a magnet

a)

Blow it

b)

Heat it

c)

Drop it

d)

Put into coil with alternating current

18.

Magnet that only happens when there is electric current

a)

Permanent magnet

b)

Electromagnet

19.

To increase magnetic strength we can do all these

a)

Blow it

b)

Increase no of coil

c)

Increase current

d)

Use thicker wire

20.

Magnetic field direction

a)

From north to south

b)

From south to north

c)

Inside towards north

d)

Outside from south

21.

Renewable energy source

a)

Coal

b)

Hydro

22.

Renewable energy source

a)

Solar

b)

Oil

23.

Non Renewable energy source

a)

Hydrothermal

b)

Gas

24.

Transformers is a device to

a)

Increase electricity

b)

Decrease electricity

c)

Stabilize electricity

d)

Block electricity

25.

How many coil type in transformer?

a)

1

b)

2

c)

3

d)

4

26.

More coil (N) will

a)

Increase Voltage

b)

Decrease Voltage

27.

Formula for transformers

a)

Np NpNs=VsVp\frac{N_p}{N_s}=\frac{V_s}{V_p}  

b)

NsNp=VpVs\frac{N_s}{N_p}=\frac{V_p}{V_s}  

c)

NpNs=VpVs\frac{N_p}{N_s}=\frac{V_p}{V_s}  

28.

After power plant, current will go to

a)

National Grid

b)

Step up transformer

c)

Step down transformer

d)

Destination

29.

After national grid network, current will go to

a)

National Grid

b)

Step up transformer

c)

Step down transformer

d)

Destination

30.

Components to protect from overload or short circuit

a)

Fuse Box

b)

Circuit Breaker

c)

Main Switch

d)

Wire

31.

2 pin plug don't have these wire

a)

Live

b)

Neutral

c)

Earth

32.

Earth wire direct dangerous current towards the

a)

Ground

b)

Sky

c)

Transformer

33.

Which one is miniature circuit breaker (MCB)

a)
b)
c)
34.

Energy efficient electrical product produce

a)

More energy waste

b)

Less energy waste

35.

What is the power usage by this product?

a)

1300 lumens

b)

3000k

c)

16W

d)

27.4 years

36.

If power is energy/time, then energy is

a)

power+time

b)

power-time

c)

powerxtime

d)

power/time

37.

Unit of electrical energy usage is

a)

kW

b)

kWh

c)

Jh

d)

Jh-1

38.

Calculating electricity bill is based on unit. 1 unit equal to

a)

1 kWj

b)

2 kWj

c)

3 kWj

d)

4 kWj

39.

Block 1: 200 unit = RM 0.218

Block 2: 100 unit = RM 0.334

Block 3: 300 unit = RM 0.516

Block 4: 300 unit = RM 0.546

Block 5: 900 unit = RM 0.571

If the person uses 671 unit, which block you will use?

a)

1,2,

b)

1,2,3

c)

1,2,3,4

d)

1,2,3,4,5

40.

Energy source is converted to electricity by

a)

Burning

b)

Rotating turbine

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