Two resistors, R1 and R2, are connected first in series and then in parallel to the same ideal battery of voltage V.
a. (i) Derive an expression for the power Ps supplied by the battery when the resistors are in series.
b. (ii) Derive an expression for the power Pp supplied by the battery when the same resistors are connected in parallel.
c. (iii) Hence obtain the ratio PsPp in terms of R1 and R2.
d. (iv) Evaluate this ratio when R1=2R2.