In following diagram boxes may contain resistor or barrery or any other element

then determine in each case
(a) E.M.f. of battery
(b) Battery is acting as a source or load
( c) Potential difference across each battery
(d) Power input to the battery or output by tthe battery.
( e) The rate at which heat is generated inside the battery.
(f) The rate at which the chemical energy of the cell is consumed or increased.
(g) Potential differnce across box
(h) Electric power output across box.

Answer

(a) E=10 V each
(b) (A) act as a source and (B) act as load
( c) `V_(A)=9V, V_(B)=11V`
(d) `P_(A)=9W, P_(B)=11W`
( e) Heat rate = 1 W each
(f) 10 W each
(g) 9V, 11V
(h) -9W, 11 W