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in Physics by (95.2k points)

Two wires made of different materials have the same uniform current density. They carry the same current only if: 

A. their lengths are the same 

B. their cross-sectional areas are the same 

C. both their lengths and cross-sectional areas are the same 

D. the potential differences across them are the same 

E. the electric fields in them are the same

1 Answer

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by (78.5k points)
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Best answer

B. their cross-sectional areas are the same

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