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  1. What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?

    2. A.

     50
    B.

     12
    C.

     24
    D.

     36

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    Answer : Option B

    Explanation :

    according to rules 1/R = 1/R1 + 1/R2 (for parallel) =1/20 + 1/30 =12 ohm

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