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.
The omnipresent usefulness of Ohm's Law: [ Voltage (volts) = Current (amps) X Resistance (ohms) ] Ohm's Law can be used with resistors to find the current flowing through a circuit. The law is I = V/R (where I = current, V = voltage across resistor, and R = resistance). For the circuit above we can only use Ohm's law for the resistor so we must use the fact that when the LED is on, there is a 1.9 voltage drop across it (BTW: The voltage drop varies with the type of LED).