1.

A wire of resistance `R` is divided in 10 equal parts. These parts are connected in parallel, the equivalent resistance of such connection will beA. `0.01 R`B. `0.1 R`C. `10 R`D. `100 R`

Answer» Correct Answer - A
(a) Each part will have a resistance `r = R//10`
Let equivalent resistance be `r_(R)` then
`(1)/(r_(R)) = (1)/(r ) + (1)/(r ) + (1)/(r )`……………….. 10 times
`:. (r_(R)) = (10)/(r ) = (10)/(R//10) = (100)/(R ) implies r_(R) = (R )/(100) = 0.01 R`


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