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An electrical fire is rated 230 V 3 kW How many joules of energy are transformed in two hours?
3 kilowatts means 3,000 joules per second.
Two hours = 7,200 seconds.
3 kilowatts for two hours = (3,000 x 7,200) = 21,600,000 joules.
We don't understand the part about "fire", and we don't need the part about the voltage. These are
leftover parts; we'll drop them into the bottom of our toolbox when nobody is looking.
What else can I help you with?
Does amps express the difference in energy?
No, amps (amperes) do not directly express the difference in energy. Amps measure electrical current, which is the flow of electric charge. Energy is typically measured in units such as joules or kilowatt-hours.
How long could 90 Js of energy light a 40 Watt light balb.?
To calculate this, we first need to convert the energy from joules to watt-hours. 90 joules is equal to 0.025 watt-hours. Therefore, with 0.025 watt-hours of energy, a 40 watt light bulb would last for approximately 0.000625 hours or 0.0375 minutes.
What is electrical energy measured in?
Electrical energy is typically measured in kilowatt-hours (kWh). This unit represents the amount of energy consumed by an electrical device operating at a power of one kilowatt for one hour.
Three 60 watt buibs were burned for 200 hours each find kilowatt hours and electrical energy consumed in certain home?
To find the total kilowatt-hours consumed, first calculate the total energy used by one bulb: 60 watts * 200 hours = 12,000 watt-hours or 12 kilowatt-hours. Then, multiply this by the number of bulbs (3) to get the total kilowatt-hours: 12 kWh * 3 = 36 kWh. The electrical energy consumed in the home is 36 kilowatt-hours.
What is heat energy measured in?
Heat energy is most commonly measured in units of calories or joules.
What measure of electrical energy transfers by electrons in a circuit?
The measure of electrical energy transferred by electrons in a circuit is typically measured in joules (J) or kilowatt-hours (kWh), which is often used for billing purposes by utility companies.
Electrical potential energy?
Electrical potential energy is the energy stored in an object due to its position in an electric field. It arises from the interaction between electric charges and is measured in joules. The potential energy is directly proportional to the voltage or electric potential difference between the charges.
How many joules of energy is consumed if the electrical meter shows 400 units of energy?
To determine the joules of energy consumed, you would need to know the conversion factor from the units displayed on the electrical meter to joules. This conversion factor varies depending on factors like the voltage and current of the electricity supply. Typically, 1 unit of energy is equivalent to approximately 3600 joules. So if the meter reads 400 units, the energy consumed would be around 1,440,000 joules (400 units * 3600 joules/unit).
Does amps express the difference in energy?
No, amps (amperes) do not directly express the difference in energy. Amps measure electrical current, which is the flow of electric charge. Energy is typically measured in units such as joules or kilowatt-hours.
How do you work out the number of joules of wasted energy in a TV?
To calculate the wasted energy in a TV, you would multiply the power consumption of the TV (in watts) by the time the TV is left on (in hours). This will give you the energy consumed in watt-hours (Wh). To convert watt-hours to joules, multiply by 3600 (since 1 Wh = 3600 joules).
How much energy is produced by electrical energy?
The amount of energy produced by electrical energy depends on the source of the electricity. For example, a wind turbine or solar panel will produce a certain amount of energy based on their capacity and efficiency. The energy produced can be calculated in kilowatt-hours (kWh) or joules, depending on the context.
How long could 90 Js of energy light a 40 Watt light balb.?
To calculate this, we first need to convert the energy from joules to watt-hours. 90 joules is equal to 0.025 watt-hours. Therefore, with 0.025 watt-hours of energy, a 40 watt light bulb would last for approximately 0.000625 hours or 0.0375 minutes.
What is the equation for energy transferred by an electrical appliance?
The equation for energy transferred by an electrical appliance is given by the formula: Energy (E) = Power (P) x Time (t). In this equation, Power is measured in watts (W) and Time is measured in seconds (s) or hours (h). This formula is derived from the definition of power as the rate at which energy is transferred or converted.
How many joules in a liter of petrol?
A gallon of gasoline contains about 132x106 joules of energy, which is equivalent to 125,000 BTU or 36,650 watt-hours:
Is 1044 joules a lot of energy?
1044 joules is not considered a lot of energy in most contexts. For example, it is equivalent to the energy required to lift a small apple a few feet off the ground. In comparison to larger energy units like kilowatt-hours, 1044 joules is relatively small.
What is energy expressed in?
Energy is typically expressed in joules (J), which is the standard unit of energy in the International System of Units (SI). Other common units used to express energy include calories and kilowatt-hours.
What are the units for energy?
In the SI system the units are Joules. You can also use ftlbf (footpoundforce). For thermal energy use calories or BTU
