WorksheetsQUIZ TOPIC 2
Total questions: 10
Worksheet time: 5mins
Which statement best describes renewable energy?
Energy from sources that will eventually run out
Energy stored in fossil fuels
Energy from natural sources that replenish naturally
Energy obtained only from wind
Which is a correct example of non-renewable energy generation?
Hydropower plant
Solar photovoltaic panels
Geothermal hot springs
Coal-powered electricity plant
Which technology involves converting sunlight directly into electricity?
Electromagnetism
Photoelectric Effect
Piezoelectricity
Thermoelectric Effect
According to the formula, resistance will increase if:
The conductor length decreases
The cross-sectional area increases
The resistivity decreases
The conductor length increases
The resistivity symbol ρ represents:
The flow of electrons
The material’s inherent opposition to current
The diameter of the conductor
The length of the wire
Which material factor affects resistance?
Resistivity of material
Colour of the wire
Shape of conductor
Ambient noise
What is the purpose of insulation in transmission lines?
Reduce temperature
Prevent power loss and protect against short circuits
Increase conductor diameter
Strengthen mechanical properties
What is one impact of corrosion on conductors?
Decreases resistance
Increases conductivity
Increases resistance and reduces efficiency
Improves flexibility
What is the colour of the neutral wire in single-phase installations?
Blue
Brown
Red
Yellow
Refer to the cable colour code image. Which colour combination represents the earth wire?
Brown
Blue
Gray
Green/Yellow
