What is the total resistance of the section if R1 = 60 ohms, R2 = 12 ohms, R3 = 15 ohms, R4 = 3 ohms.

| February 3, 2021 | education

The method for calculating the total resistance of a circuit determines how the resistors are connected. Circuit elements can be connected in two ways. A series connection means connecting elements to each other, and in a parallel connection, the elements are part of parallel branches.
When connected in series, the total resistance is equal to the sum of the resistances of all elements included in this circuit:
R = R1 + R2 + R3 + R4 = 60 + 12 + 15 + 3 = 90 (Om)
Parallel connection of resistors – a circuit in which the beginning of all resistors are connected to each other and the ends of all resistors are connected to each other.
Formula for calculating the parallel circuit resistance:
Req = 1 / {(1 / R1) + (1 / R2) + (1 / R3) .. + (1 / Rn)} where n is the total number of resistors in the circuit connected in parallel
R = 1 / {(1/60) + (1/12) + (1/15) + (1/3)} = 5.005 (Om)



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