Two wires which are made of the same material have the same cross-sectional area, but different lengths l₁ and l₂. Prove that if they are used as fuse wires, they will melt for the same value of the current flowing through them, in the same time.
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Answer:
their areas are different
Explanation:
p(rho) = R A/l
p1= p2
A1/l1 = A2/l2
A1/A2 = l1/l2
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