Explain the definition of current, conductance and resistance (in mobile charger)

[saHar]

PLEASE HELP? Explain the definition of following:

a) Current in terms of rate of flow of mobile charge carrier
b) Conductance and resistance in relation to density of mobile charge carrier.

 

[frashizle]

current is the measure of the flow of electrical energy (amp)

conductance is the degree to which an object conducts electricity, calculated as the ratio of the current that flows to the potential difference (voltage)

resistance in this context is something which decreases the flow of electrical energy