Four resistors,each of value'r' are connected as four sides of the parallelogram ABCD.The equivalent resistance across A and C is
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r
Explanation:
Four resistors,each of value'r' are connected as four sides of the parallelogram ABCD.The equivalent resistance across A and C is
AB & BC in series
=> r + r = 2r
AD & CD is series
=> r + r = 2r
now AB & BC in series is in ║ with AD & CD is series
= 1/(1/2r + 1/2r)
= 2r(1 + 1)
= 2r/2
= r
The equivalent resistance across A and C is r
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