Question

wire of
dessistance R is
cut
into five equal pieces. These five pieces
of wire
are then connected in parallel.
If the resultant resistance of this
combination be R then the ratio of
resultant to the odiginal will be?​

Answer 1

Answer:

25

Explanation:

Let the resistance be R.

Now, the wire is cut into five equal parts.

So, each resistance would be R / 5.

Now, the wires are connected in parallel combination. So,

1 / R' = 1/R/5 +  1/R/5 +  1/R/5 +  1/R/5 +  1/R/5 -------- ( 1 )

where R' is the new resistance.

Now solving equation (1), we get,

1 / R' = 25 / R

Cross multiplying the above equation, we get,

25 R' = R

R / R' = 25

Hence, 25 is the answer.

Answer 2

Refer the above attachment plzz!

Explanation:

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