Voltage and Current Basics |
| Equation for voltage | ||||||
| Equation for current |
v | voltage in volts |
w | energy in joules |
q | charge in coulombs |
i | current in amperes |
q | charge in coulombs |
t | time in seconds |
(Eq1) |
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(Eq2) |
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This figure shows direction of current flow in a circuit with respect to the voltage source. |