Question

4
The strength of a School Increased by toy. There
year, and decreased by tot roy. In the
hext year is in final strength greater or less than
the original one and by how much percent​

Answer 1

Step-by-step explanation:

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Answer :------->

A piece of wire of resistance r is cut into 4 equal parts. So, each of this part will have resistance equal to r / 4.

There are four parts of cut wire each with resistance equal to r / 4.

When these parts are connected in parallel, then equivalent resistance will be :------->

1 / R eq = 1 /( r/4 ) + 1 / (r/4 ) + 1/ ( r/4 ) + 1 / ( r/4 )

1 / R eq = 4 / r + 4 /r + 4 / r + 4 / r

1 / R eq = 16 / r

R eq = r / 16

Hence, the equivalent resistance of the combination when connected in parallel is r / 16.

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