THIS USER ASKED 👇
Acircuit contains two devices that are connected in parallel. if the resistance of one of these devices is 12 ohms and the resistance of the other device is 4 ohms, the total resistance of the two devices is a. 0.333 ohms. b. 16 ohms. c. 0.0625 ohms. d. 3 ohms.
THIS IS THE BEST ANSWER 👇
when the resistors are in series, the resistance in the circuit increases. For example, if two resistors, R1 and R2, are in series, the combined resistance is R1 + R2.
When connected in parallel, the total resistance is reciprocal (1 / R1 + 1 / R2)
In this case the resistors are parallel.
Total resistance = (1/12 + 1/4) ⁻¹
= (1/3) ⁻¹
= 3 Ohms