Find the equivalent circuit for each of the following

(a) Three ideal 1.5-V batteries connected in series.

(b) A 5-mA current source in series with a 100-kΩ resistor.

(c) A 40-A ideal current source in parallel with an ideal 10-A current source.

(d) A 100-V source in parallel with two 10-kΩ resistors.

(e) An ideal 15-V source in series with an ideal 10-mA source.

(f) A 15-V ideal source and a 5-V ideal source connected in parallel.