One joule is equal to the work it takes to make a watt of power for a second, or to move a body one meter with a one-Newton force. In physics, it's common to talk about joules of energy — one example used to illustrate a joule is lifting an apple, which weighs about one Newton.
Power in general is defined as energy over time. 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.
With an average bolt of lightning striking from cloud to ground containing roughly one billion (1,000,000,000) joules of energy, that is a lot of power in every lightning bolt!
Watts to Joules per second
|1 Watts = 1 Joules per second||10 Watts = 10 Joules per second||2500 Watts = 2500 Joules per second|
|9 Watts = 9 Joules per second||1000 Watts = 1000 Joules per second||1000000 Watts = 1000000 Joules per second|
Joules are equal to the power in watts times the time in seconds. For example, find joules of energy for 50 watts of power over 25 seconds.
Joule/second to Volt Ampere Conversion Table
|Joule/second [J/s]||Volt Ampere [V*A]|
|1 J/s||1 V*A|
|2 J/s||2 V*A|
|3 J/s||3 V*A|
|5 J/s||5 V*A|
A 12-volt battery provides 12 Joules of energy for every 1 Coulomb of charge which it moves from the low energy location to the high energy location.
Table of Joules to Volts for conversion, equivalence, transformation (Coulomb: 10):
|How many Joules are:||Equivalence in Volts:|
|1 Joule||Equivalent to 0.1 Volts|
|2 Joule||0.2 Volts|
|3 Joule||0.3 Volts|
|4 Joule||0.4 Volts|
How to convert mAh to Joules
If voltage, (V) equals Joules per Coulombs (V = J/C) and Amperes (I) equals charge (coulombs) per second (A = Q/t), then we can define electrical power (P) as being the totality of these two quantities. This is because electrical power can also equal voltage times amperes, that is: P = V*I.
While joules could be converted to watts, amps cannot be converted to joules as they two vary in many respects as the units of measurement. An amp measures the power, a joule is used to measure the total work done. The symbol of an Amp is 'A' and the symbol of a joule is 'J'.
Volt Ampere to Joule/second Conversion Table
|Volt Ampere [V*A]||Joule/second [J/s]|
|20 V*A||20 J/s|
|50 V*A||50 J/s|
|100 V*A||100 J/s|
|1000 V*A||1000 J/s|
Electronic accessories manufacturer Belkin recommends its 1,411 joule model for most TV sets, or its 2,444 joule unit for projection televisions. ReviewSurgeProtector.com similarly advocates a minimum level of 1,500 joules for TVs.
The microwave uses 6000J of energy.
Anything containing a microprocessor is at risk of being damaged by a strong fluctuation in voltage. A small power surge won't fry your devices or even leave any visible damage, but it can cause electronic rust. You need surge protectors to prevent the degradation of internal microprocessors on your electronic devices.