Question

a piece of wire of resistance r is cut into five equal parts. these parts are then connected in parallel. if the equivalent resistance of this combination is r then the ratio r/r is​

Answer 1

Answer:

Let the length of resistance R be L

Let the resistance of each part after cutting be R/s

Since resistance is proportional to the length of the resistor,

R/s

=R/5.....................(i)

For resistors in parallel,

$(\frac{5}{r}) 5 = \frac{25}{r} = \frac{r}{25}$

which is equal to R'

r/r'= 25:1

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