v=1.2;
vt=1.1;
i=0.15;
disp("Part a");
r=(v-vt)/i;
disp("the internal resistance of the cell (in Ω) is"); disp(r);
disp("Part b");
disp("when the terminal voltage equals one-half the open circuit voltage , the load resistance must be equal to the internal resistance (in Ω) of"); disp(r);