Currents and Circuits, Circuits Lab

Many of you still seem to not understand that currents arise when a potential difference (i.e. voltage drop) is placed across an element. This creates a field which makes electrons have an average velocity in the direction opposite the field ( because thay have a NEGATIVE charge). Tis flow of electrons is the current. The current through an element depends on the voltage drop across that element; it is not some magic fixed number which is always the same. The total current depends on the overall conductance [or 1/ (Rtotal) ] x Von the whole circuit.

Many of you also do not seem to understand that the voltage source provided V Joules per Coulomb and that the joules per coulomb ( i.e. volts) lost by a charge going around the circuit must add up to the Voltage gained from the voltage source.

ALSO SEE 2 previous posts 1 On Bulbs and 1 On Circuits