a salt or ester of carbonic acid. verb (used with object), carbonated, carbonating. 2. to form into a carbonate. 3. to charge or impregnate with carbon dioxide: carbonated drinks.
Ohm's Law can be rewritten in three ways for calculating current, resistance, and voltage. If a current I should flow through a resistor R, the voltage V can be calculated. First Version of the (voltage) formula: V = I Ã R. If there is a voltage V across a resistor R, a current I flows through it.
Ohm's law and Kirchhoff's circuit laws are used to calculate the appropriate resistor value to obtain the desired current. The value is computed by subtracting the LED voltage drop from the supply voltage, and dividing by the desired operating current.