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  1. Five 100 resistors are connected in parallel. If one resistor is removed, the total resistance is

  2. A.
    25
    B.
    500
    C.
    100
    D.
    20

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    Answer : Option A

    Explanation :

    1/R = 1/R1 + 1/R2 + 1/R3 + 1/R4  1/R = 1/100 + 1/100 + 100 + 1/100  1/R = 4/100  1/R = 1/25  Therefore R = 25 ohm.


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