Calculating resistors in parallel, is PRECISELY the same as the calculations for capacitors in SERIES.
This calculator can be used for work problems. For example, 'A' can paint a room in 5 hours and 'B' can paint a room in 6 hours. If they both work togrther how long will the job take? Input the 6 and 5 just as if they were resistors and get your answer.
This calculator can be used for 'fill' problems. For example, one pipe can fill a water tank in 5 hours, while another pipe can fill the same tank in 6 hours. If both pipes are working at the same time........hmmm seems eerily familiar to the other problem doesn't it?
Good luck with your math problems.