HOW DO WE SET UP A CURRENT IN A CIRCUIT?

POTENTIAL DIFFERENCE ACROSS ENDS OF A WIRE (APPLY ELECTRIC FIELD) and

electrons will move against field direction!

ELECTRONS MOVE FROM LOW TO HIGH ELECTRIC POTENTIAL

(IN ELECTROSTATICS, NO FIELD VECTOR PARALLEL TO SURFACE; POINTS PERPENDICULAR TO SURFACE; ALL POINTS COME TO

SAME POTENTIAL)

CURRENT FLOW IS LIKE FLOW OF WATER IN RIVER OF UNIFORM WIDTH WITH STEEPNESS RELATED TO POTENTIAL DIFFERENCE AT DIFFERENT POINTS;

MORE STEEP; MORE CURRENT