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the items that you need are ;

a voltage supply e.g. battery cell ,

a resistive load " circuit " to draw a measure of current ,

and some connecting wires or known as " conductors , to transmit the current flow from the source to load .

the connection wires should have rated connectors , to join onto the

battery terminals .

this is all that is need for a simple circuit , because a resistor - load is classed as a simple circuit .

however ; the following could be used as visual indicators or convenience

and are not completely necessary to make a circuit work ,

a meter to measure and display the current flow ,

a lamp or L.E.D. to show a signal prescence ,

and it is advisable to have an isoalting switch to turn the cicuit on and off,

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