Question

B) Solve the following problem :
The resistance ofa l m long nichrome wire is 6 ¢

we reduce the length of the wire to 70 cm. what will its
resistance be ?
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Answer 1

Answer:

4.2

Step-by-step explanation:

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Answer 2

Answer:

Resistance = ρ L/A

R is directly proportional to L

R is directly proportional to L6ohm when length is 1m

When length is reduced to 70cm =

Therefore R1/R2 = L1/L2

Therefore R1/R2 = L1/L26/R2 = 100/70

Therefore R1/R2 = L1/L26/R2 = 100/70R2 = 4.2 Ω