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What is the definition of power in terms of energy and time?
Power is the rate at which energy is transferred or transformed over time. It is measured in watts (Joules per second) and indicates how quickly work is done or energy is used. Mathematically, power is calculated as the energy transferred or used divided by the time taken.
What is the rate at which electrical current is converted to another form of energy?
The rate of energy transfer or transformation is mesured in joules / second, also known as watts.The rate of energy transfer or transformation is mesured in joules / second, also known as watts.The rate of energy transfer or transformation is mesured in joules / second, also known as watts.The rate of energy transfer or transformation is mesured in joules / second, also known as watts.
Is power derived from energy?
Power = energy / time. For example, if a devices uses an ENERGY of 1000 Joules in 10 seconds, then during those 10 seconds it uses a POWER of 1000/10 = 100 Watts.
What is difference between Kilowatt power vs kilowatt hour?
Kilowatt is a measure of the rate of energy use. It is 1,000 Watts or 1,000 Joules per second. A kilowatt hour is 1,000 Joules per second for 3,600 seconds or 3,600,000 Joules. This means a Kilowatt hour not a rate but a measure of total energy used.
How much power is used (in watts) when 120 joules of work is done in 1 minute?
Power is the rate at which work is done, given by the formula Power = Work/Time. In this case, Power = 120 Joules / 60 seconds = 2 Watts.
What is the energy used in one second when a bulb have 40Watts.?
The energy used by a 40W bulb in one second is 40 Joules. This is because power is defined as the rate at which energy is transferred or converted, so if the bulb consumes 40W of power in one second, it uses 40 Joules of energy in that time period.
What is the definition of power in terms of energy and time?
Power is the rate at which energy is transferred or transformed over time. It is measured in watts (Joules per second) and indicates how quickly work is done or energy is used. Mathematically, power is calculated as the energy transferred or used divided by the time taken.
60-watt light bulb in jouls?
A Watt is a Joule per second. Joules measure energy and Watts measure power, which is the rate of energy used. Therefore, if you use a 60 Watt light bulb for 10 seconds, you consume 600 Joules.
What power consumption?
The term power consumption is defined as the amount of electrical energy used over time in an appliance. Power consumption is measured using kilo watts.Another AnswerPower is simply a rate; the rate of energy transfer. So power cannot be 'consumed'; it's energy that's being consumed. So, when we say 'power consumption', what we mean is 'the rate of energy consumption'. As power is a rate, it is measured in joules per second which, in SI, is given a special name: the watt.
What is the rate at which electrical current is converted to another form of energy?
The rate of energy transfer or transformation is mesured in joules / second, also known as watts.The rate of energy transfer or transformation is mesured in joules / second, also known as watts.The rate of energy transfer or transformation is mesured in joules / second, also known as watts.The rate of energy transfer or transformation is mesured in joules / second, also known as watts.
How much power is used when 600J of work are done in 10s?
60 W
Is power derived from energy?
Power = energy / time. For example, if a devices uses an ENERGY of 1000 Joules in 10 seconds, then during those 10 seconds it uses a POWER of 1000/10 = 100 Watts.
What is the difference between a radio waves power and its energy?
Power, in all situations is the rate of change of energy. If the power is constant, it can be found using the formula, "Power = Energy Used / Time taken". So, the power of a radio wave (in watts) is equal to the amount of energy it transmits (in joules) per second.In symbols:P = E/t
What is difference between Kilowatt power vs kilowatt hour?
Kilowatt is a measure of the rate of energy use. It is 1,000 Watts or 1,000 Joules per second. A kilowatt hour is 1,000 Joules per second for 3,600 seconds or 3,600,000 Joules. This means a Kilowatt hour not a rate but a measure of total energy used.
How do you convert 30146.4 kilojoules of heat to watts or some comparable energy?
"Joules" is an absolute amount of energy. "Watts" is a rate at which energy is used or moved.1 watt means 1 joule per second.1 joule is the amount of energy that moves in 1 second, if the rate (power) is 1 watt.30,146.4 kilojoules = 30,146,400 joules.If the 'power' (rate of using energy) is 100 watts ... as in a medium incandescent bulb ...then 30,146,400 joules of energy are used in 83.74 hours.If the power is 1,000 watts ... 1 'kilowatt', as in a small toaster ... then 30,146,400 joulesof energy are used in 8.374 hours. Here, you can see the unit of energy that you've seenbefore, on your electric bill ... the "kilowatt-hour". 30,146.4 kilojoules = 8.374 kilowatt-hours.1 kilowatt-hour = 3,600 kilojoules = 3,600,000 joules
What is the energy used every second known as?
Energy / time is known as power. In SI units, time is measured in seconds, energy in joules; the unit for joules / second has the special name watts.
Is 250 joules same as 2.45kW?
No, 250 joules is not the same as 2.45 kW. Joules measure energy, while kilowatts (kW) measure power, which is the rate at which energy is used or produced. To convert between them, you need to consider the time duration over which the energy is used. For example, 2.45 kW means 2.45 kilojoules per second, so you would need to specify a time to make a proper comparison.
