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Answer :

Answer: 375 cm

Explanation:

l2 = ?
R2 = 16.25Ω

l1 = 75cm

R1 = 3.25Ω

l2/l1 = R2/R1

l2 = R2l1/R1 = 16.25 x 75/3.25

l2 = 375cm

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