Python function for calculating Ohm's Law.
# coding=utf-8 def ohms_law(voltage=0, current=0, resistance=0): """ Calculate Ohm's Law. E = I * R When spelled out, it means `voltage = current * resistance`, or `volts = amps * ohms`, or `V = A * Ω`. * E = Voltage - Volt (V), Pressure that triggers electron flow * I = Current - Ampere, amp (A), Rate of electron flow * R = Resistance - Ohm (Ω), Flow inhibitor References: * https://www.fluke.com/en-us/learn/blog/electrical/what-is-ohms-law * https://wikipedia.org/wiki/Ohm%27s_law :param voltage: Voltage amount. Set to `0` when calculating voltage. :type voltage: float :param current: Current amount. Set to `0` when calculating current. :type current: float :param resistance: Resistance. Set to `0` when calculating resistance. :type resistance: float :rtype: float """ if voltage == 0: # Calculate voltage return current * resistance elif current == 0: # Calculate current return voltage / resistance elif resistance == 0: # Calculate resistance return voltage / current else: return 0 # # Example usage # # # What is the voltage in the circuit? # E = I x R = (5A)(8Ω) = 40 V print("Voltage = (E = I x R)", format(ohms_law(0, 5, 8), ".2f")) # What is the current in the circuit? # I = E/R = 12V/6Ω = 2A print("Current = (I = E/R)", format(ohms_law(12, 0, 6), ".2f")) # What is the resistance created by the lamp? # R = E/I = 24V/6A = 4Ω print("Resistance = (R = E/I)", format(ohms_law(24, 6, 0), ".2f"))