The silicon is a semiconductor and can be doped to control its conductivity and create the junctions needed to make diodes and transistors. These diodes and transistors can act as switches and logic gates in properly designed circuits. Silicon can also be easily oxidized to become a robust waterproof insulator to passivate and protect the circuits and components beneath it.
The aluminium and/or copper are just good conductors used to "wire" the silicon components together and provide pads that can be used to attach wires or metal beads so that the chip can be connected to external circuits.
A computer is only not using electricity when it's switched off.
When the electricity supplying an electromagnet is switched off, the magnetic field produced by the electromagnet disappears. This means that the electromagnet loses its magnetic properties and no longer attracts or repels magnetic materials.
No, the computer doesnt have to be switched on.
Only once the electricity is switched off.
the information is lost after power is switched off.
The first time it was switched on
Some Dells can be switched as well as other manufacturers. There is a switch on the back of the computer at the power supply that can be switched. Before you buy any brand make sure that that specific model can be switched if you have that requirement.
If you store something on the computer you would put it on a usb port.
RAM memory is cleared when a computer is turned off.
RAM
The time taken for a power station to start generating electricity after it is switched on is called the "ramp-up time." This includes the time needed for the turbines to reach their full operational speed and for the electrical systems to stabilize before electricity can be delivered to the grid.
When the bulb is lit it uses energy. When there is no bulb, no energy is used even if it is switched on.