60 Questions
What is the total energy charge for a household that consumes 252 kWh in a month?
R207.59
What is the unit of power equal to one joule of energy per second?
Watt (W)
What is the purpose of conducting a household energy survey?
To understand household energy consumption
What is the energy charge for the first 50 kWh of energy consumption in a month?
69.35 c/kWh
What is the formula to calculate the power of an electrical device?
power = energy / time
What is the total cost of using a 1500 W microwave for 1 hour?
R1.07
What is the environmental levy for energy consumption in block 2?
2.28 c/kWh
What is the power rating of an electric pan?
1400 W
What is the total cost of using a 2200 W fridge for 24 hours?
R37.83
What is the energy charge for energy consumption above 600 kWh in a month?
139.31 c/kWh
What is the term for the amount of electrical energy used by an appliance or device?
Power Consumption
What is the primary electricity supplier in South Africa?
Eskom
What is the unit of energy equal to one kilowatt (1 kW) of power used for one hour?
Kilowatt-hour
What is the formula to calculate the energy consumption of an appliance?
Energy = Power x Time
What is the term for a price schedule or rate for services provided?
Tariff
What is the term for a pricing structure where the rate increases with higher consumption levels?
Tiered Tariff
How is energy consumption often measured?
Kilowatt-hours
What is the term for a device that uses electrical energy to perform a function?
Electrical Appliance
How does Eskom charge consumers?
Based on a tiered tariff system
What is the purpose of calculating energy consumption in kWh?
To make it easier to calculate energy consumption for a month
Which unit of measurement is used to calculate the energy consumption of an appliance?
Kilowatt-hours
What is the purpose of a tiered tariff system in electricity billing?
To charge higher rates for higher usage
How is the energy consumption of an appliance calculated?
Power x Time
What is the term for a tax added to the value of goods and services?
VAT
What is the primary electricity supplier in South Africa?
Eskom
What is the unit of measurement for power?
Watts
Why is energy consumption often measured in kilowatt-hours (kWh) instead of joules?
Because kWh is a more practical unit for monthly consumption
What is the term for the amount of electrical energy used by an appliance or device?
Energy Consumption
What is the formula to convert joules to kilowatt-hours?
Joules / 3600
What is the purpose of estimating energy consumption?
To approximate the energy used by an appliance or device
What is the energy charge for a household that consumes between 351 and 600 kWh in a month?
124.74 c/kWh
How is the power of an electrical device typically calculated?
power = energy / time
What is the primary factor affecting the total cost of energy consumption for a household?
Total monthly energy consumption
What is the purpose of looking at the power ratings of appliances?
To calculate the cost of operating the appliance over time
What is the relationship between watts and kilowatts?
1 kilowatt is equal to 1000 watts
What is the benefit of using energy-efficient appliances?
They consume less energy
What is the unit of measurement for the total cost of energy consumption?
Rands
What is the term for the rate at which electrical energy is supplied or consumed by a device?
Electrical power
What is the term for a device that uses electrical energy to perform a function?
Appliance
What is the primary purpose of understanding energy consumption in kWh?
To calculate the cost of energy consumption
If a household consumes 420 kWh in a month, what is the total energy charge?
31,012.4 cents
What is the energy consumption of a 200 W lamp used for 5 hours?
1 kWh
If an appliance uses 2500 joules of energy in 5 seconds, what is its power rating?
500 W
What is the total cost of using a 3000 W air conditioner for 2 hours, assuming an energy charge of 85.60 c/kWh?
R51.36
What is the energy consumption of a device that uses 1200 W of power for 3.5 hours?
4.2 kWh
If a household consumes 800 kWh in a month, what is the total cost, assuming an energy charge of 139.31 c/kWh?
R1,112.48
What is the power rating of a device that consumes 3 kWh of energy in 2 hours?
1500 W
What is the total cost of using a 250 W television for 8 hours, assuming an energy charge of 83.32 c/kWh?
R5.56
What is the energy consumption of a 1200 W microwave used for 2.5 hours?
3.5 kWh
If an appliance uses 4000 joules of energy in 10 seconds, what is its power rating?
400 W
What is the primary purpose of using a tiered tariff system in electricity billing?
To charge higher rates for higher consumption levels
What is the unit of energy consumption that is equivalent to one kilowatt of power used for one hour?
Kilowatt-hour (kWh)
What is the primary factor affecting the total cost of energy consumption for a household?
The amount of electricity consumed
What is the purpose of estimating energy consumption?
To provide a rough estimate of energy consumption for budgeting purposes
What is the term for the rate at which electrical energy is supplied or consumed by a device?
Power
What is the benefit of using energy-efficient appliances?
They reduce energy consumption and lower electricity bills
Why is energy consumption often measured in kilowatt-hours (kWh) instead of joules?
Because kWh is a more practical unit for monthly energy consumption
What is the term for a tax added to the value of goods and services?
VAT (Value-Added Tax)
What is the primary purpose of conducting a household energy survey?
To identify opportunities to reduce energy consumption
What is the relationship between watts and kilowatts?
One kilowatt is equal to 1000 watts
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