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24 June, 22:44

There are three source of resistance in parallel circuit. Two of them are rated at 20 ohms, the other at 10 ohms. What is the circuits total resistance

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  1. 24 June, 22:46
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    In paraller connection you can calculate the equivlant resistqnce from the relation:

    1/R (equi) = 1/R1 + 1/R2 + 1/R3

    1/R (equi) = 1/20 + 1/20 + 1/10

    1/R (equi) = 0.05+0.05+0.1 = 0.2

    so, R (equi) = 5 ohms
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