The diagrams show two electric circuits. Circuit 1 contains a cell, an ammeter and a resistor. A second resistor is now connected to circuit 1, to make circuit 2.
Which circuit has the smaller total resistance and in which circuit is the ammeter reading smaller?
1 )
smaller total resistance: circuit 1 / smaller reading on ammeter: circuit 1
2 )
smaller total resistance: circuit 1 / smaller reading on ammeter: circuit 2
smaller total resistance: circuit 2 / smaller reading on ammeter: circuit 1
4 )
smaller total resistance: circuit 2 / smaller reading on ammeter: circuit 2
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