Table of Contents
When the electric power in terms of watt increases, the electric potential in terms of volt also increases keeping electric current constant….AC and DC.
| Current Type | Formula | Terms |
|---|---|---|
| AC | PW= PF × VV × IA | IA is current in ampere |
| DC | PW= VV × IA | PW is Power in watt |
| VV is voltage in volts | ||
| IA is current in ampere |
Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s. A Watt is the amount of energy (in Joules) that an electrical device (such as a light) is burning per second that it’s running.
What is a joule of electric current?
A joule of energy is defined as the energy expended by one ampere at one volt, moving in one second. The voltage, or potential difference between two terminals or points is defined as having a value of one volt, when one joule of energy is used in moving one coulomb of electric charge between those two terminals.
Is watts a measure of current?
A “watt” is a measure of power. One watt (W) is the rate at which work is done when one ampere (A) of current flows through an electrical potential difference of one volt (V).
What is the relationship between watts and voltage?
What is the relation between watt and volt? Answer: The relation between watt and volt are proportionate. That is watt is directly proportional to volt. This implies that- When the electric power in terms of watt increases, the electric potential in terms of volt also increases keeping electric current constant.
Are KJ and Watts the same?
You can calculate watts from kilojoules and seconds, but you can’t convert kilojoules to watts, since kilojoule and watt units represent different quantities.
How is 1KWh related to Joule?
A Joule of energy is delivered when 1 Watt of power is applied for 1 second. A KwH is a thousand Watts applied for 60 X 60 seconds so a KwH is 1000 x 60 x 60 Joules. = 3600000 J or 3.6 MJ.
How is electric energy related to electric power?
the SI unit used to measure power is the watt (W) . 1 watt is the same as 1 joule of energy transferred per second. therefore, electrical power is electrical energy over a certain time, or energy over time. energy over time is energy divided by time, so power is energy divided by time.
Can joules be converted to watts?
You can calculate watts from joules and seconds, but you can’t convert joules to watts, since joule and watt units represent different quantities.
How do you convert joules to watts per second?
A Joule is a Watt X Seconds. Watts are units of Power, whereas Joules are units of Energy. Power is Energy in accordance to time: P = E/t . So One Watt of Power is equal to one Joule per second. P=E/t 1 Watt = 1 Joule/ 1 second.
What do watts and Joules represent?
Power and energy which are what watts and joules represent, are proportional to current when expressing electrical power and energy. No current, then no power, and no energy. WATT,JOULE. ARE. MUCH. RELATED. TO. ELECTRIC. CURRENT. BEACAUSE. WATT. IS. NAMED. AFTER THE. FAMOUS. SCIENYIST. FOR. DISCOVERING. STEAM. ENGINE. IT. IS. EXPRESSES. IN. TERMS.
What is the difference between energy and Joules?
A Joule is Energy. A Joule is a Watt X Seconds. Watts are units of Power, whereas Joules are units of Energy. Power is Energy in accordance to time: P = E/t .
What is the value of a Watt?
The watt (symbol: W) is the power unit of the International System of Units. Its value indicates the amount of energy in joules that is converted, used or dissipated in one second. One watt is equivalent to 1 joule per second (1 J / s).