PHYS 1510 Quiz: day 24

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Electric current is amasure of how much charge moves thorugh a region per unit time. The conventional current was describe and establsihed as the direction of the movement of positive charge. The movement of electrons in diagram is going from left to right in a wre is equivalant to a current. Since current is the amount of charge passing through a bounday in a fixed amount of time, it can be expressed mathematically using the following equation. The flow in the diagrmas is gowing to be different becuase the wires are diferent, fatter wire gives way to more electrons. (derrivative) - yeaher is not supposed to be writing them. A metal wire is said to obey ohm"s law, or is said to be ohmic. If the device is ohmic it doesn"t obey ohm"s law is said to be non-ohmic. Note: for a non-ohmic device, the resistance at any given point in the graph in the pptx.

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