Electrical circuit diagram with resistors and voltage source for calculating total current.
Circuit diagram showing a series-parallel resistor configuration with resistors R1, R2, R3, R4 and a voltage source E, with values E = 12 volts, R1 = 2 ohms, R2 = 4 ohms, R3 = 2 ohms, R4 = 2 ohms, and a blank space for I_T.