why do internal resistance decreases with increase in concentration of the electrolyte

Dear Student, An electrolyte consist of ionic solids dissolved in it which dissociates into positive and negative ions which are available for oxidation and reduction reactions at the electrode ends and thus constitutes electric current in a closed circuit. As the concentration of these ionic compounds increases more such ions are available for the redox reaction and thus the resistance to flow of current through the electrolyte decreases I. e. It's internal resistance decreases. Regards