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Electric circuits miscellaneous

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Electric circuits miscellaneous
  1. The value of resistance R shown in the given circuit is _________ Ω .

    1. 3.5
    2. 7.5
    3. 31.1
    4. 1.25
Correct Option: A

4 =
50
7
7R
 + 6 7 + R
7 + R

=
350
7R + 6(7 + R)

⇒ R = 3.5 Ω.


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