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Hello, I would like help solving this 2 part physics question: Suppose a 12.0V potential difference is placed across a cylindrical conductor of cross-sectional area

Hello, I would like help solving this 2 part physics question:

Suppose a 12.0V potential difference is placed across a cylindrical conductor of cross-sectional area of 0.100m². If the resistance of the conductor is 0.50 Ohms, calculate the average current density inside the conductor.

In the above problem, suppose there are a volume density of 2.00 10²⁶ electrons/m³. Calculate the drift speed of the electrons in sm (micro-meters/second).

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