How many ways to determine the electrical resistance of a common circuit?

One thing.
The total resistance of the circuit with a direct connection is equal to the sum of the resistances, that is, R1 + R2 + R3 + …. + Rn.
add up all the resistances.
sequential according to the formula R = R1 + R2
parallel by the formula R = R1R2 / (R1 + R2)



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