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

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

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Physics
Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open

in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level
at a place in a valley below sea level
at the top of Mt. Everest
at sea level

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