If connected in series, the same current passes through all the household appliances.  Also, if any one appliance malfunctions, it prevents current from flowing to the other appliances and thus they also don't work. So in most of the cases , household appliances are connected parallel.

If connected in series, the same current passes through all the household appliances.  Also, if any one appliance malfunctions, it prevents current from flowing to the other appliances and thus they also don't work. So in most of the cases , household appliances are connected parallel.