Question

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1) A piece of wire having resistance 'R' is cut into four equal parts
**(a) How will the resistance of each part compared with the original Substance
**(B) if four parts are placed in parallel, how will the joint resistance compared with the resistance of the original wire​

Answer 1

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Resistance of a piece of wire is proportional to its length. A piece of wire has a resistance R. The wire is cut into five equal parts.

Therefore, resistance of each part

» R/5

All the five parts are connected in parallel.

equivalent resistance (R') is given as

1/ R

» 5/R+5/R + 5/R+5/R+5

5 + 5 + 5 + 5 + 5/R

1/ R' = 25 /R

» R/R' = 25 ...

Answer 2

Answer:

25 is the answer

Step-by-step explanation:

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