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Week5 (dragged) 61

Week5 (dragged) 61 - a direction in three dimensions...

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September 07, 2010 University Physics, Chapter 25 19 Current ! Current is a scalar ! Current has a sign but not a direction ! (Note: current density is a vector! - see later) ! We will represent the direction of the current flowing in a conductor using an arrow ! This arrow represents whether the net current is positive or negative in a conductor at a given point but does not represent
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Unformatted text preview: a direction in three dimensions ! Physically, the charge carriers in a conductor are electrons that are negatively charged ! However, as is conventionally done, we define positive current as the net flow of positive charge carriers past a given point per unit time Thursday, September 23, 2010...
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