Electric Charge
Calculators and formulas for calculating the electric charge
This function calculates the relationship between electric charge, current and time.
To perform the calculation, use the radio button to select which value should be calculated. Then enter the required values and click the 'Calculate' button.
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Formulas for electrical charge
The electrical charge is given in coulombs (C) or ampere seconds (As). 1 C = 1 As.
Or to put it another way, the electric charge is +1 C if there are \(6.248\; 509\; 074 × 10^{18} \) more protons than electrons in and on a body,
or -1C' if there are \(6.248\; 509\; 074 × 10^{18} \) more electrons than protons in and on it.
In practice, of course, the different numbers of protons and electrons in a body are not counted but the current (amperes) is measured over a certain period of time. The result of the measurement can then be converted into amperes / second (As) or coulombs using the calculator above.
The storage capacity of a battery is referred to as the nominal charge, which is given in ampere hours (Ah). 1 Ah = 3600 C.
Electric charge:
\[ Charge= Current · Time\] \[ C=I·t[s]\] \[ Ah=I·t[h]\]Electric current:
\[I=\frac{C}{t[s]}\] \[ I=\frac{Ah}{t[h]}\]Period:
\[ t[s]=\frac{C}{I}\] \[ t[h]=\frac{Ah}{I}\]
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