Current Electricity 1 Question 16

16. The effective resistance between points P and Q of the electrical circuit shown in the figure is

(2002, 2M)

(a) 2RrR+r

(b) 8R(R+r)3R+r

(c) 2r+4R

(d) 5R2+2r

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Solution:

  1. The circuit can be redrawn as follows :


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