V = IR. I = P / E. E = P / I. R = E / I. Voltage (E) and power (W) are known, how to calculate current (I). 12 Volt 60 Watt Light Bulb Circuit. I = V / R. R = V / I. Volts = Amps x Ohms; Amps = Volts / Ohms; Ohms = Volts / Amps; Watt's Law . Formula wheel electrical engineering electronics ohm's law pie chart circle power wheel electric power formula fundamentals general ohm's law emf ohms audio physics electricity electronics formula wheel formulas amps watts volts ohms cosine equation audio engineering pie chart charge physics formula for power calc voltage bridging - Eberhard Sengpiel sengpielaudio OHM’S LAW The rate of the flow of the current is equal to electromotive force divided by resistance. Ohm's Law: V=IR Power Law: P=VI P R V I Power in watts Resisitance in ohms Voltage in volts Current in amps. Voltage (E) and power (W) are known, how to calculate current (I). Expanded Ohm’s Law Chart. 120 Volt 100 Watt Light Bulb Circuit. Ohm’s Law and Power Equation Practice Worksheet Name_____ Period_____ Date_____ Show all four steps for each problem STEP1 - RECORD INFO STEP 2 - WRITE EQUATION STEP 3 - SUBSTITUTE IN THE EQUATION STEP 4 - SOLVE 1. Voltage (E) and current (I) are known, how to calculate resistance (R). Ohm’s Law Ohm determined that if Voltage is increased across a resistance, more current will ﬂ ow through the resis-tance, and likewise, if Voltage is decreased across a resistance, less current will ﬂ ow through the resistance. P I2 P= V= R= I= P R P I V I I2R V P 2 V R 2 P V V R PR VI IR Unknown: Inside circle Known: Outside circle Ohm's Law: V=IR Power Law: P=VI P R V I Power in watts Resisitance in ohms Voltage in volts Current in amps. Ohm’s Law states that the current (in Amperes) is equal to the Voltage (in Volts) divided by the resis- tance (in Ohms). Calculate Power, Current, Voltage or Resistance. Find the resistance of a circuit that draws 0.06 amperes with 12 volts applied. 120 Volt 60 Watt Light Bulb Circuit. 2. I = Intensity of Current = Amperes E = Electromotive Force = Volts R = Resistance = Ohms P = Power = Watts The three basic Ohm’s law formulas are: E E I = ––– R = ––– E = I x R R I Below is a chart containing the formulas related to Ohm’s law. Given the relationship between these three elements, once you know any two of them, it is possible to calculate the third. 3. Just enter 2 known values and the calculator will solve for the others. Simple to use Ohm's Law Calculator. Ohm's Law states the relationship between voltage, current and resistance. Find the current through a 12-ohm resistive circuit when 24 volts is applied.

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