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WorksheetsF3 Chapter 6 Electricity & Magnetism
Total questions: 60
Worksheet time: 5hrs 8mins
Which of the following describe the characteristics of non-renewable energy sources?
Can be depleted if the usage is not controlled
Takes millions of years to be formed
Can cause environmental pollution
Have limited sources
The statements are about a type of energy source.
Nuclear
Water
Geothermal
Sun
Which match is true about the type of generator and the fluid that spins the turbine?
Generator --> Thermal
Energy Source --> High Pressure steam
Generator --> Hydro
Energy Source --> The mixture of hot gas and air
Generator --> Gas turbine
Energy Source --> High pressure water
Generator --> Diesel
Energy Source --> The mixture of petrol and air
Which of the following uses single-phase wiring?
Industrial area
Shopping mall
Hotel
Homestay
The diagram shows the transmission and distribution of energy. what is the voltage value at P and Q?
P - 13kV , Q - 140kV
P - 132kV , Q - 415V
P - 13kV , Q - 240V
P - 330kV , Q - 150V
What is the function of the National Grid Network?
Transmit electrical energy all over the country through high voltage cable network
Collect and channel the electrical energy to the consumer
store voltage for emergency use only
Lower the value of voltage to suit the supplied area
The diagram shows the 3 pin plug. Name wire 2, 3 and 4.
2 - Earth wire , 3 - Live wire , 4 - Neutral wire
2 - Neutral wire , 3 -Earth wire , 4 - Live wire
2 - Live wire , 3 - Neutral wire , 4 - Earth wire
2 - Earth wire , 3 - Live wire , 4 - Neutral wire
An electrical iron has label 100W, 240V. Calculate the electrical current flow in the iron.
0.41 A
4.16 A
4.50 A
41.5 A
Tick on the non-renewable energy sources
Natural gas
Water
Geothermal
Coal
State TRUE or FALSE:
Fuse rating is the minimum value of the current that can flow through it.
TRUE
FALSE
State TRUE or FALSE:
Fuse wire has a low melting point so that it can easily melt when high current passes through it
TRUE
FALSE
Choose the correct statement of energy efficiency
Use energy-efficient equipment that uses only small amount of energy
Switching off the light and electrical appliances when not in use
save money through the lower electricity bills.
State TRUE or FALSE:
The concept of energy efficiency is only suitable to be applied at the commercial premises only.
TRUE
FALSE
State TRUE or FALSE:
Efficient energy consumption can save energy and money
TRUE
FALSE
True or false:
Advantages of having the National Grid System:
Consumers still receive electrical energy rom other power stations if one of the power station is shut down.
State the type of phase based on the statement :-
Supply 240V electrical energy
Single Phase wiring system
Three phase wiring system
State the type of phase based on the statement :-
Installed in low and middle cost housing areas
Single Phase wiring system
Three phase wiring system
State the type of phase based on the statement :-
Installed in industrial and commercial area
Single Phase wiring system
Three phase wiring system
State the type of phase based on the statement :-
Supply electrical energy at 415V or more
Single Phase wiring system
Three phase wiring system
Identify the type of transformer shown.
Step Up
Step Down
Identify the type of transformer shown.
Step Up
Step Down
Which of the following is catagorized as non-renewable energy sources?
Biomass energy
Nuclear energy
Wave energy
Geothermal energy
Induced current (Electricity) can be produced by
Boiling the water
Friction of magnet
Changing in magnetic field (Cutting of magnetic field line)
Throwing thing from high ground
What is the function of steam in the thermal power plant shown in the diagram above?
To heat up the turbine
To produce electricity
To rotate the turbine
To be used in chemical reaction
Figure above shows a simple diagram of nuclear power plant. As similar to other power plants (thermal,hydro,wind), which of the part where strong magnets are in-placed.
Turbine
Generator
Reactor
Condenser
Which of the following is correct for the energy change happened in a biomass power station.
Chemical energy > Heat energy > Kinetic energy > Electrical energy
Nuclear energy > Heat energy > Kinetic energy > Electrical energy
Heat energy > Kinetic energy > Electrical energy
Chemical energy > Kinetic energy > Electrical energy
Direct current (DC) are electric current that flows in on direction only. Which of the following are not the sources of DC current?
Solar cells
Car accumulators
Batteries
Back-up generator
Alternating current is an electric current that ( )
flows in on direction only
flows in unknown directions
flows in constantly reversing direction
flows in specific direction depend on the type of circuit
Which of the following is not the function of Cathode Ray Oscilloscope (C.R.O.)?
Show differences in shape of graph for DC and AC
Show the direction of current for DC and AC
Show the resistant for DC and AC
Show the voltage change for DC and AC
In which arrangement does the LED light up?
P,Q,R
P,Q
P,R
Q,R
Transformer is a device for changing the voltage of ( )
Alternating current (AC)
Direct current (DC)
Direct and alternating current (DC & AC)
Non of above
The diagram shows a step-up transformer. If the
Number of turn in primary coil, Np = 100 ;
Number of turn in secondary coil, Ns = 1000 ;
Primary voltage, Vp = 5V ;
then what will be the secondary voltage, Vs = ?
0.5V
50V
500V
5V
The wiring system in Malaysia consists of two different types, single-phase and three-phase wiring. Which of the two is more stable and more suitable for high electrical usage industrial areas ?
Single-phase witing
Three-phase wiring
Safety components in a house electrical wiring system are as follows, except
Fuse
Earth Leakage Circuit Breaker (ELCB)
Earth wire
Closed circuit camera
Diagram above shows a kettle with rated current of 5A. Which of the following fuse rating is the most suitable for the kettle?
4A
10A
30A
7A
The diagram shows a three-pin plug. Which of the following component could not be found in a two-pin plug？
Earth wire
Neutral wire
Fuse
Live wire
The electric jug has the rating as shown in the figure above. Calculate its rated current. (P = VI)
9.17 A
528000 A
0.11 A
The above kettle has a rated voltage of 240V and rated current of 9V. Calculate the electrical power of kettle in kW.
2160
2.16
26.67
0.0375
Samsung Ecofridge has a rated power of 205W. Estimate the electrical energy used in kWh if the fridge was used for 2 hours.
410 kWh
0.41 kWh
102.5 kWh
0.1025 kWh
A rice cooker with rated power of 80W operated for 30 minutes. If the electrical tariffs is 21.80 sen/kWh, calculate the cost of energy.
52320 sen
26160 sen
26.16 sen
52.32 sen
Which of the following describe the characteristics of non-renewable energy sources?
Can be depleted if the usage is not controlled
Takes millions of years to be formed
Can not cause environmental pollution
Have limited sources
The diagram shows an apparatus.
Which of the following statements are true about the apparatus?
It is used to change a low input voltage to a higher output voltage
It alters the voltage of alternating current
It is used to change a high input voltage to a lower output voltage
It helps to reduce energy wastage during the transmission of electrical energy
The diagram shows four transformers, A, B, C and D.
Which transformer is a step - up transformer?
A
B
C
D
Where does the electric power voltage begin to be lowered in the electricity transmission and distribution system?
Substation
National power grid
Switch field
Main substation
The electrical wiring system in a home has several safety features.
Which of the following are the safety features?
The main fuse
The colour codes for different wires
The Earth Leakage Circuit Breaker
Electric meter
The diagram shows a common electrical device.
What are the safety features shown in the device.
Live wire
Earth wire
Neutral wire
Fuse
An electrical appliance is marked 800 W, 240 V.
What is the cost of using the appliance for four hours daily for a week if the cost of a unit of electricity is RM 0.20?
RM 3.30
RM 4.48
RM 50.64
RM 205.23
An electric iron is rated 1050 W, 240 V.
Which of the following is a suitable fuse rating for the iron?
1 A
2 A
3 A
5 A
The statements are about a type of energy source.
What is the energy source?
Nuclear
Water
Geothermal
Sun
What is the function of the National Grid Network?
Transmit electrical energy all over the country through high voltage cable network
Collect and channel the electrical energy to the consumers
Store voltage for emergency use
Lower the value of voltage to suit the supplied area
Some energy source are renewable while some are non - renewable.
Choose on non - renewable energy sources.
Natural gas
Water
Geothermal
Coal
Fuse rating is the minimum value of the current that can flow through it.
FALSE
TRUE
Fuse wire has a low melting point so that it can easily melt when high current passes through it.
FALSE
TRUE
Which of the following is non - renewable source of energy?
Which of the following shows the correct display on Cathode Ray Oscilloscope (C.R.O) when direct current passes through it?
Diagram below shows a process to generate induced current through relative motion of the coil with magnet.
How to prove that the induced current has been generated?
The coil becomes hot
The bar magnet becomes hot and melt
The needle of Galvanometer deflects
The needle of the Galvanometer vibrates
Which of the following is a problem related to electricity supply in life?
Our country is more dependent on non-renewable energy sources such as petroleum
Inefficient and ineffective use of electricity among the citizen
Malaysia Awareness on saving electricity is still low among Malaysians
Malaysia sells electricity to neighbouring countries to generate the economy
