Ohm’s Law Flowchart The process of solving problems involving electrical quantities using Ohm’s (or Watt’s) Law is always the same: 1. 2. 3. 4. Identify the quantity to be found (the unknown). Look at the known quantities. Choose the equation that relates the knowns to the unknown. Solve for the unknown. Flowcharts are a means of graphically showing the steps in a process. The following flowchart provides a visual representation of steps 1-4 in the above Ohm’s Law problem solving process. QUANTITY TO BE FOUND I (Current) P & R 𝑰= R & V P & V 𝑰= 𝑷 𝑹 P (Power) 𝑷 𝑽 I & R R (Resistance) R & V I & V I & P 𝑹= 𝑷 = 𝑰𝑽 𝑰= 𝑽 𝑹 𝑷 = 𝑰𝟐 𝑹 𝑽𝟐 𝑷= 𝑹 𝑹= P & V I & V 𝑷 𝑰𝟐 V (Voltage) I & P I & R 𝑽 𝑰 𝑹= P & R 𝑽 = 𝑰𝑹 𝑽𝟐 𝑷 𝑽= 𝑷 𝑰 𝑽= EQUATIONS TO USE TO FIND QUANTITY 𝑷𝑹