There is a potential difference of 1 V between the ends of a 10 cm long graphite rod that has a cross-sectional area of 1 mm2. The resistivity of graphite is 7.5E-6 Ω-m. Let's trace some intermediate quantities before finding the electric field inside the rod. Current through the rod: Group of answer choices 1.3 A 0.13 A 1.3E4 A 1.3E6 A

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Q: please redo.

A: Length of the rod

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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.