Resistance is a measure of. a) the energy per unit charge in a circuit
b) how hard it is for electrons to move through the circuit
c) how hard it is for electrons to move through the battery
d) the number of charge carriers in a circuit

A
A charge moving through an electric circuit would gain electric potential energy in the internal circuit and lose electric potential energy in the external circuit. Charge has the greatest amount of electric potential energy at the - terminal of the battery.