Yapper said:oohhhhh ok, q is a constant, makes sense... Thanks alot. V varies with the material its flowing through? And how do u calculate n??
The current formula is I = nqAv, where I represents the current, n represents the number of charge carriers, q represents the charge of each carrier, A represents the cross-sectional area, and v represents the velocity of the charge carriers.
To solve for current, you need to plug in the values for n, q, A, and v into the formula I = nqAv and perform the necessary mathematical operations to find the value of current.
The variables in this formula have specific meanings and units. I represents the current, which is measured in amperes (A). n represents the number of charge carriers, which is measured in particles per unit volume. q represents the charge of each carrier, which is measured in coulombs (C). A represents the cross-sectional area, which is measured in square meters (m^2). v represents the velocity of the charge carriers, which is measured in meters per second (m/s).
Yes, this formula assumes that the current is constant and that the charge carriers are moving at a constant velocity. It also assumes that the charge carriers are evenly distributed throughout the cross-sectional area.
This formula is commonly used for steady or direct currents, but it can also be used for alternating currents as long as the assumptions of constant current and velocity hold true. It may not be suitable for more complex or time-varying currents.