Physics
One should not connect a number of electrical appliances to the same power socket because

this can damage the domestic wiring due to overloading
this can damage the appliances due to overloading
this can damage the electrical meter
the appliance will not get full voltage

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Physics
Hydro-electric power is a:

Renewable natural resource
non-renewable natural resource
A mixture of renewable and non-renewable natural resource
Neither renewable nor non renewable resource

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