Question

how to calculate net resistance from a circuit? ​

Answer 1

Answer:

1. If you know total voltage and total current, you can use the equation Rt = Vt/It to calculate total resistance.

2. If you know the total power and the total voltage, you can use the equation Rt = Vt^2/Pt to calculate total resistance.

Answer 2

Answer:

Resistance = voltage/current    or    R=V/I

in series circuit, net resistance = $R_1+R_2 ....$

in parallel circuit, net resistance:

                $\frac{1}{R_{net}} =\frac{1}{R_1} +\frac{1}{R_2} ....$

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