Question

what is the first (1st) step used in finding a solution for a missing variable value using ohms law?
record and label the final answer using the correct unit of measurement
do the math
convert the letters to numbers
select the correct formula
identify the problem

Explanation:

When using Ohm's Law ($V = IR$, where $V$ is voltage, $I$ is current, and $R$ is resistance) to find a missing variable value, the first logical step is to select the correct formula. Ohm's Law has different forms depending on which variable is unknown. For example, if current ($I$) is missing, the formula would be $I=\frac{V}{R}$; if resistance ($R$) is missing, $R = \frac{V}{I}$. Without first selecting the appropriate formula (based on the known and unknown variables), one cannot proceed with calculations (eliminating "Do the Math" as the first - step), converting letters to numbers (which is part of substitution after formula selection), recording the final answer (which is the last step), or just identifying the problem in a very general sense (as formula selection is more specific to the Ohm's Law context).

Answer:

Select the Correct Formula