Correct the mistakes, if any : Connecting appliances in a circuit beyond power capacity is short circuit.

Correct the mistakes , if any : Amperage decreases in proportion to the decrease in the area of cross section of the conductor.

Correct the mistakes if any : It is to reduce the heat loss that electric lamps are filled with inert gases.

Which situation causes short circuit ?

The power dissipatated in an ac circuit is zero if the circuit is