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Two hundred joules of energy are consumed in 10 s What is the power?
Wiki User
∙ 14y ago
Simply divide energy by the time. Answer is in Watts.
Wiki User
∙ 14y ago
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How long could 90 Js of energy light a 40 Watt light balb.?
Power (watts) = Energy (joules) / time (seconds). Thus, Time (seconds) = Energy (joules) / Power (watts) = 90J / 40W = 2.25s
How much energy does a 100-w light bulb use in 10 s?
Power = energy / time, in SI units: watts = joules / seconds. Solving for energy: Joules = watts x seconds.
What is the watts equivalent of 231000 joules?
231,000 joules is an amount of energy, while watts are a measure of how fast energy is used or converted. 231,000 joules could be used by 1 watt running for 231,000 seconds, or 231 watts running for 1000 seconds, etc. Energy = power x time, so 1000 watts for 231 seconds is an amount of energy equal to 231,000 joules.
What power was used if it took 2s?
If work or energy was exerted or transferred in 2 seconds,then the power was(1/2) x (the number of joules of work or energy) watts.
How many watts is needed to melt one pound of aluminum?
How fast the energy is provided (power, in joules/second or watts) is irrelevant, as long as not too much energy gets radiated away. What you really need to know is how much energy (in joules) is needed.
What is the measure of energy consumed by a circuit?
voltage- apex :))
What is energy-consumed when power240watt and time10hrs?
Convert the hours to seconds. 1 watt is 1 joule/second, so the energy (in joules) is simply the power (in watts) x the time (in seconds).
What is the speed at which energy is transfered?
That is called "power". Energy / time = powerIn SI units: Joules / seconds = WattsThat is called "power". Energy / time = powerIn SI units: Joules / seconds = WattsThat is called "power". Energy / time = powerIn SI units: Joules / seconds = WattsThat is called "power". Energy / time = powerIn SI units: Joules / seconds = Watts
What is the conversion from joules of energy to watts of energy?
There is no conversion, as joules measures energy and watts measures power -two different quantities!
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.
The rate at which energy is transfered is called?
That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.
How are work energy and power related?
Work and energy are very closely related. Power is the rate of using energy or doing work. Energy is measured in Joules. Power is measured in Joules per second or Watts. Power P is the time derivative of Work W, P= dW/dt. Power = Workdone or Energy / Time
What does power times time equal?
Power is defined as energy per unit time or Joules per second if you use SI units. This means that multiplying power by time leaves Joules, or energy. Power times time = energy
What is difference in energy density and power density?
Energy density is the amount of power that can be stored ( in for example capacitance) to be then consumed over time, whereas power density is how much energy is consumed quickly like the energy stored in a capacitance can be consumed very quickly.
How many watts are 4680000000joules?
Watts are a measure of power, Joules are a measure of energy. The energy is equal to the power times the time. So if you have a power of 5 watts running for 7 seconds, that is 5x7 Joules of energy, or 35 Joules. Looked at another way, power measures how fast energy is converted. So 35 Joules converted in 7 seconds would be 5 watts of power, but it would need 35 watts to convert that energy in 1 second.
What is the power consumed by 40W bulb in a day?
40 W is the power in this case. Whether you have it on a second, or 24 hours, the power will always be 40 W. Now, if it is actually the energy you want to calculate, multiply the power by the time to get the energy. In units: watts x seconds = joules or: kilowatts x hours = kWh
Is the length of time an electrical load is on proportional to power or energy?
Power (watts) is amperes times voltage, or joules per second. Energy is joules, or watt-seconds. The length of time an electrical load is on is proportional to energy, not power.
