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DIDOCOCOCCAL paloi U Uraws a current of 5 amperes from a 220 volt supply line ?22. An electric heater which is connected to a 220 V supply line has two resistance coils A and B of 24 22resistance each. These coils can be used separately (one at a time), in series or in parallel. Calculate thecurrent drawn when :(a) only one coil A is used.(b) coils A and B are used in series.(ccoils A and B are used in parallel.

Answer»

a) I=V÷R =>220÷24=9.2b) 220÷48=>4.6c) 220÷12=>18.3



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