Older Homes have fuses instead of cicuit breakers.  The fuse will blow, breaking the cicuit, if more then a certain amount of current flow through it.  A fuse for one line in your home's electrical system melts if more then 30A of current flow goes through it.  Determine if the fuse will blow if the following appliances are all connected in Parallel to that line: a 13 ohms toaster, a 18 ohm

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Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.