Two identical batteries each of emf E = 2 volt and internal

Last updated: 8/9/2022

Two identical batteries each of emf E = 2 volt and internal resistance r = 1 ohm are available to produce heat in an exlernal resistance by passing a current through it. What is the maximum power that can be developed across an external resistance R using these batteries. A. 4W B. 8W C. 6W D. 2W