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Finding total resistance of two devices

A circuit contains two devices that are connected in parallel. If the resistances of one of these devices is 12ohms and the resistance of the other device is 4ohms, the total resistance of the two devices is?

(a) 0.0625
(b) 0.333 ohms
(c) 3 ohms
(D) 16 ohms

Solution Summary

This solution is a quick calculation for finding total resistance of parallel resistances.