WorksheetsForm 3 Chapter 6: Electricity and Magnetism
Total questions: 22
Worksheet time: 31mins
What are the types of sources of energy?
(a)
Which statements are correct for renewable energy source?
Energy source that can be replaced and cannot be depleted
biomass energy
nuclear energy
petroleum
Energy source that cannot be replaced and can be depleted
Does Malaysia have a nuclear power station?
Yes
No
What are the components used in the generator model?
magnet
coil of wire
voltmeter
LED
fuse
A scientist named Michael Faraday found that electricity can be produced by cutting off magnetic lines. What are the movement that can help in producing electric current?
(a)
What is detected by galvanometer when the galvanometer pointer deflects?
(a)
List all power stations used for generating electricity.
Thermal power station
Wind power station
Hydroelectric power station
Biomass power station
nuclear power station
What is the difference between direct current (d.c) and alternating current (a.c)?
What are the functions of cathode ray oscilloscope?
display shape of graph
display direction of current and voltage
display resistance
Transformer is a device used to increase and decrease the (a) of an alternating current.
Which are the main components of a transformer?
solenoid
primary coil
load
laminated soft iron core
secondary coil
Step-down transformer has _________ number of turns of primary coil, Np and ___________ primary voltage, Vp.
(a)
Power station -> _________ -> __________ -> step-down transformer station -> switching zone at main intake sub-station
(a)
Which of following statements are correct?
Generator at power station produce 11kV or 25kV
At step-up transformer station, a.c. is increased to 132kV, 275kV or 500kV.
Heavy industrial area received 33kV, light industrial area received 11kV and office, residential area received 240V
Hospital received 240V
Three-phase wiring is used in?
Which statement is false?
Earth Leakage Circuit Breaker (ELCB) is used to break the circuit when too much current flow through it
Main fuse box is used to measure the total units of electricity used
Miniature Circuit Breaker (MCB) is used to separate the final circuit to different electrical appliances
Main switch is used to control the total current flowing through the circuit
Fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit.
True
False
A fuse to be used should have a value which is slightly (a) than the maximum current that flows through a circuit.
List 3 types of wire connecting to 2-pin and 3-pin plugs.
Earth wire
Fuse
Neutral wire
Live wire
What are the safety components in wiring system in homes?
Switch
Fuses
Miniature circuit breaker (MCB)
LED
Name two types of fuses.
Which are these statement true for ways to save electrical energy consumption?
Maximises natural lighting to reduce electrical energy consumption.
install solar panel
Choose appliance that has low energy rating
Efficient ventilation system to reduce uses of air-conditioning and fans.
