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The combined resistance R of two resisto...

The combined resistance R of two resistors `R_(1) and R_(2) " where " R_(1), R_(2) gt 0` is given by `(1)/(R) = (1)/(R_(1)) + (1)/(R_(2))`
If `R_(1) + R_(2) = C` (constant), show that the maximum reistance R is obtained by chossing `R_(1) = R_(2)`

A

`R_(1)=R_(2)`

B

`R_(1)=2R_(2)`

C

`R_(2)=2R_(1)`

D

`R_(2)=CR_(1)`

Text Solution

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The correct Answer is:
A
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