What is the current when the voltage is 18 volts and the resistance is 6 ohms? a. 3 amps b. 108 amps c. 12 amps d. 24 amps

The answer is 3 amps or 3 amperes.

Since we are trying to find the current, we will use the formula I=V/R or current is equal to the voltage over amperes. Ohms is the unit for Resistance, Volt is the unit for Voltage and for current is ampere. 

f the electric power and the total resistance are known, then the current can be determined by using the following formula: 
I = √(P / R)
Corresponding units:
Ampere (A) = √(Watt (W) / Ohm (Ω))
Where P is the electric power.

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