Question

9. A piece of wire having a resistance R is cut into five equal parts.

1.If the five parts of the wire are placed in parallel, how will the
resistance of the combination compare with the resistance of the original
wire? What will be ratio of resistance in series to that of parallel​

Answer 1

Answer:

R : R' = 25:1

Explanation:

⛦Hᴇʀᴇ Is Yoᴜʀ Aɴsᴡᴇʀ⚑

▬▬▬▬▬▬▬▬▬▬▬▬☟

➧ 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' = 25:1 ...✔

_________

Thanks...✊