How to calculate joules?

Discussion in 'Mathematics and Physics' started by Krumlink, Sep 5, 2007.

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I was wondering how I could calculate joules using the formula below

E=1/2*V^2*C

E= Energy in joules
V= Working voltage
C= Capacitance in farads

What I really want to know is what the symbol ^ means and how to use it.

Thanks!

2. ronsimpsonWell-Known MemberMost Helpful Member

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E=1/2*v^2*c
E=1/2*v*v*c
V^2=v*v

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well what does the symbol ^ mean rofl!

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5. CheapSliderMember

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^ = exponentiation = power of
EG:

A^2 = A x A

B^3 = B x B x B

C^-2 = √C

6. David JamesNew Member

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Yes

Yes

No.

C^-2 is 1/(C^2)

√C is C^0.5

7. Hero999Banned

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That's wrong.

C^-2 = 1 / (C^2)

√C = C^(1/2)

Hell, I prefer Latex, it makes thing so much easier to to read.

Last edited: Sep 8, 2007

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I hooked up my ultrahigh capacitance cap bank and it has 10 joules of power and thats only running it at 14Volts

2 caps with 19000uf and 40V
2 caps with 26000uf and 30V

All of them can handle an additional 10V.

Then running at 30V, it has 40Joules

When I discharge them, it goes KAPOP!

9. kscienceNew Member

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lulz

I just got a capacitor to put on ebay; it is 2,835uf at 60,000 volts.

The math makes my head hurt; it is spec'd at 5103 joules.