Author Topic: Question about voltage  (Read 891 times)

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Offline DoorVbTopic starter

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Question about voltage
« on: October 11, 2018, 04:28:35 pm »
The formula for voltage is V(volt) = J(joule) / C(coulomb)

Does this mean that if I have a resistor that is dropping one volt, every coulomb of charge that passes trough it generates one joule of heat?

Or am I getting the formula wrong?

Any help is appreciated, :)
Van Beveren
 

Offline Paul Rose

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Re: Question about voltage
« Reply #1 on: October 11, 2018, 04:56:25 pm »
Sounds right to me.

I used to thinking of it in terms of power and current.

P = I * V

1 Ampere dropping 1 Volt = 1 Watt of power

That 1 Ampere is just 1 Coulomb of charge per second.  And that 1 watt is just 1 Joule per second.

Substitute power with charge per time, substitute current with charge per second.  Same story.




 


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