Two Wires Made of Different Materials Have the Same Uniform

question 27

Multiple Choice

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

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