Difference between AC & DC power supply




Ques:Why we can’t store AC in Batteriesinstead of DC.or Can we store AC in batteries instead of DC?

Ans:We cannot store AC in batteries because AC changes their polarity upto 50 (When frequency = 50 Hz) or 60 (When frequency = 60 Hz) times in a second. Therefore the battery terminalskeep changing Positive (+ve) becomes Negative (-Ve) and vice versa, but the battery cannot change their terminals with the same speed so that’s why we can’t store AC| in Batteries.
Also when we connect a battery with AC Supply, then It will charge during positive half cycle and discharge during negative half cycle because the Positive(+ve) half cycle cancel the negative (-Ve) half cycle, so the average voltage or current in a complete cycle is Zero. Sothere is no chance to store AC in the Batteries.
Also note that Average Voltage x Average Current ≠ Average Power