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Physics
The safe current of a fuse wire does not depend on its
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Q. The safe current of a fuse wire does not depend on its
Current Electricity
A
length
42%
B
radius
28%
C
area of cross-section
23%
D
material of the wire
8%
Solution:
The safe current of a fuse wire I $\propto [r^3 / \rho]^{1/2}$. It is independent of length.