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Electric Power

on Sun Aug 26, 2018 12:16 pm
Electric means producing electricity while power is defined as the rate of energy being transfer, meaning electric power also known as electric transfer.


The unit of electric power is the watt (W), it is named after James Watt ( 1736-1819).

Power in watts = volts x amperes

Remember that 1 coulomb per second is an ampere. Therefore, power in watts equals the product of volts times amperes.

Formulas:

P = V x I
I = P ÷ V
V = P ÷ I


We should remember that power is the time rate of doing work, whereas work is power used during a period of time.

The SI unit forPower is watt (W) while in Work is joule (J). The joule is a basic practical unit of work or energy. The SI unit for energy is E.

Formulas:

Power =  Work ÷ Time
Work =  power x time


With the watt unit of power , one watt used during one second equals the work of one joule, or one watt is one joule per second.
1 joule = 1 watt . second
1 watt = 1 joule / second

In terms of charge and current,

1 joule = 1 volt . coulomb
1 watt = 1 volt . ampere
Remember that the ampere unit includes time in the denominator, since the formula is 1 ampere = 1 coulomb / second.

Example :

What is power consumption in watts when the current is 3A and the voltage supply is 15V? The solution is :
P = V x I
so watts are equal to volts times ampere,
W = V x A
Then ,
W = 15V x 3A
W = 45W
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Re: Electric Power

on Tue Aug 28, 2018 12:59 pm
Is Electricity Used in the Human Body?
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Re: Electric Power

on Tue Aug 28, 2018 1:09 pm
mau wrote:Is Electricity Used in the Human Body?

Yes, our brain dispatches millions of electrical signals along the nerves in our central nervous system, these nerves connect with your muscles and provide the power to complete an action or movement and these electrical signals enable us to brush your teeth, eat a meal and run off extra calories.
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Re: Electric Power

on Tue Aug 28, 2018 1:16 pm
Admin wrote:
mau wrote:Is Electricity Used in the Human Body?

Yes, our brain dispatches millions of electrical signals along the nerves in our central nervous system, these nerves connect with your muscles and provide the power to complete an action or movement and these electrical signals enable us to brush your teeth, eat a meal and run off extra calories.

Wow , thanks for the info Very Happy , I have another question , what are some power sources other than electricity?
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Re: Electric Power

on Tue Aug 28, 2018 1:21 pm
mau wrote:
Admin wrote:
mau wrote:Is Electricity Used in the Human Body?

Yes, our brain dispatches millions of electrical signals along the nerves in our central nervous system, these nerves connect with your muscles and provide the power to complete an action or movement and these electrical signals enable us to brush your teeth, eat a meal and run off extra calories.

Wow , thanks for the info Very Happy , I have another question , what are some power sources other than electricity?

Solar power comes from the sun's energy. Photovoltaic cells harness sunlight or energy to produce power for businesses and homes. A wind turbine harnesses energy from the wind to provide power. Underground thermal heat energy creates geothermal energy. Biomass fuels produce steam or other liquids or gases for power. Biomass energy is harnessed from organic matter such as wood, animal waste, plants and crops.
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Re: Electric Power

on Tue Aug 28, 2018 1:41 pm
Admin wrote:
mau wrote:
Admin wrote:
mau wrote:Is Electricity Used in the Human Body?

Yes, our brain dispatches millions of electrical signals along the nerves in our central nervous system, these nerves connect with your muscles and provide the power to complete an action or movement and these electrical signals enable us to brush your teeth, eat a meal and run off extra calories.

Wow , thanks for the info Very Happy , I have another question , what are some power sources other than electricity?

Solar power comes from the sun's energy. Photovoltaic cells harness sunlight or energy to produce power for businesses and homes. A wind turbine harnesses energy from the wind to provide power. Underground thermal heat energy creates geothermal energy. Biomass fuels produce steam or other liquids or gases for power. Biomass energy is harnessed from organic matter such as wood, animal waste, plants and crops.

Now I know that there's a lot of power sources other than electricity, thank you for your answers admin Smile
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Re: Electric Power

on Mon Sep 03, 2018 1:19 pm
What is the difference between current and power?
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Re: Electric Power

on Mon Sep 03, 2018 1:37 pm
What is the importance of electricity?
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Re: Electric Power

on Mon Sep 03, 2018 1:39 pm
Why is electricity dangerous?
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Re: Electric Power

on Mon Sep 03, 2018 1:45 pm
Why should we save electricity?
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Re: Electric Power

on Mon Sep 03, 2018 2:26 pm
mau wrote:What is the difference between current and power?

Electric current is the actual rate of flow of electrons past a given point, in a unit of time while power, measured in watts, is the amount of work electricity can do in a circuit, watts are calculated by the voltage times amps in a circuit.
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Re: Electric Power

on Mon Sep 03, 2018 2:27 pm
mau wrote:What is the importance of electricity?

It has now become a part of our daily life and one cannot think of a world without electricity. Electricity is now an important part of homes & industries. Almost whole the devices at homes, businesses and industries are running because of electricity.
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Re: Electric Power

on Mon Sep 03, 2018 2:28 pm
mau wrote:Why is electricity dangerous?

Because electricity moves quickly through water and the human body is 70 percent water and if the electricity is strong enough, it can cause the victim's muscles to tighten up so much he or she can't let go. Anyone who touches someone who is being electrocuted can become part of the circuit as well.
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Re: Electric Power

on Mon Sep 03, 2018 4:06 pm
mau wrote:Why should we save electricity?

The reason why it is important to be energy-conscious and make every effort to conserve our electricity is that conservation can save money. Fossil fuels are not a clean source of energy either. Conservation of electrical energy can help to lessen pollution and reduce greenhouse gas emissions.
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Re: Electric Power

on Mon Sep 03, 2018 4:18 pm
Who is the father of electricity?
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Re: Electric Power

on Tue Sep 04, 2018 9:31 am
jhella wrote:Who is the father of electricity?

William Gilbert is credited as one of the originators of the term "electricity" and also remembered largely for his book De Magnete (1600). He is regarded by some as the father of electrical engineering or electricity and magnetism. But, Michale Faraday was also one one the great contributors in field of electricity.
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Re: Electric Power

on Tue Sep 04, 2018 9:34 am
mau wrote:
jhella wrote:Who is the father of electricity?

William Gilbert is credited as one of the originators of the term "electricity" and also remembered largely for his book De Magnete (1600). He is regarded by some as the father of electrical engineering or electricity and magnetism. But, Michale Faraday was also one one the great contributors in field of electricity.

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Re: Electric Power

on Wed Sep 05, 2018 1:58 pm
mau wrote:
jhella wrote:Who is the father of electricity?

William Gilbert is credited as one of the originators of the term "electricity" and also remembered largely for his book De Magnete (1600). He is regarded by some as the father of electrical engineering or electricity and magnetism. But, Michale Faraday was also one one the great contributors in field of electricity.

Zeus.. just kidding Mad Laughing
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Re: Electric Power

on Wed Sep 05, 2018 2:00 pm
mau wrote:Why is electricity dangerous?

Well, why not conduct an experiment and try to touch an open wire with an electricity flowing through it. Then Tell us if you're still Alive. Laughing Laughing Laughing Laughing
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Re: Electric Power

on Wed Sep 05, 2018 2:42 pm
I think it is beyond your topic, but I did see it is related to power so what Is Different Between Resistance Grounding System And Resistance Earthing System? Very Happy Surprised cyclops pirat Wink
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Re: Electric Power

on Fri Sep 07, 2018 7:44 am
Gel wrote:I think it is beyond your topic, but I did see it is related to power so what Is Different Between Resistance Grounding System And Resistance Earthing System? Very Happy Surprised cyclops pirat Wink

Resistance grounding system means connecting the neutral point of the load to the ground to carry the residual current in case of unbalanced conditions through the neutral to the ground whereas resistance earthing system is done in an electric equipment in order to protect he equipment in occurrence of fault in the system.
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Re: Electric Power

on Mon Sep 10, 2018 1:46 pm
Who is founder of electricity?
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Re: Electric Power

on Mon Sep 10, 2018 1:47 pm
Who invented power?
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Re: Electric Power

on Mon Sep 10, 2018 1:47 pm
How was electricity created?
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Re: Electric Power

on Mon Sep 10, 2018 1:47 pm

What is the importance of electricity?
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Re: Electric Power

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