Chemical energy.
An iPad uses electrical energy from its battery. When the battery is charged, it stores this electrical energy to power the device's functions.
What comes out is electrical energy, while what is in the battery is chemical energy.
Probably it uses a battery to provide it with energy.
The type of energy a computer uses is electricty.
A phone uses energy to function, which is provided by its battery. The phone does not produce energy on its own, but it can be charged using external sources such as electricity from a power outlet or a portable charger.
An alarm clock typically uses electrical energy to power its internal components, such as the clock mechanism, display, and alarm sound. The electrical energy is usually supplied by a battery or by being plugged into an outlet.
chemical energy
That depends on the type of calculator you are referring to. An abacus uses mechanical energy An electronic calculator uses electrical energy A brain doing mental arithmetic uses chemical energy
The car uses a DC curent battery due to that DC is the only current that can be stored and what a car normally uses is a 12 volt battery
Anyone can use wind energy. But people can use it for multiple purposes, like charging a battery to running your homes electricity.
A battery stores energy in the chemical form. When you're ready to use the energy, the battery delivers it to you in the electrical form.
The Olympus OM-1N camera uses a 1.35V mercury battery.