A village has to be supplied with electricity from a power station that is a long way from the village.
Which type of current should be used, and at which voltage?
type of current:alternating current / voltage:high voltage
2 )
type of current:alternating current / voltage:low voltage
3 )
type of current:direct current / voltage:high voltage
4 )
type of current:direct current / voltage:low voltage
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