What happened next was this: Jahlil phoned his father, Chucky Okafor, who had moved from Oklahoma back to his hometown of Chicago a few years before. Chucky heard it immediately in his sonâs voice, which was somewhere between a cry and a scream. The only words Chucky could make out: âMama.
Current is the rate at which charge is flowing. Resistance is a materialâs tendency to resist the flow of charge (current). So, when we talk about these values, weâre really describing the movement of charge, and thus, the behavior of electrons.
quantumlight said: current has a direction and magnitude, intuitively it should be a vector but my physics textbook describes it as a scalar. Why is that? It is somewhat like the difference between speed and velocity. Current is defined to be the quantity of charge that flows past a point in a wire per unit time. In many cases the direction of the charge flow changes from one point to another, but the amount of charge passing a given point in a wire is the same at all points.