Consistency of supply at reasonably high power.
No need for the household to have its own generator with all the disadvantages of fuel (if internal-combustion engine-driven, which is the only consistent way it can be done unless you own a stretch of river!), maintenance and noise.
Mains electricity can kill by causing cardiac arrest or disrupting the electrical signals in the body that control the heart. High voltage electricity can also cause severe burns and damage to internal organs. Overall, the most common cause of death from mains electricity is cardiac arrest due to the disruption of the heart's electrical system.
It depends what country you're in. Here in the UK, the mains voltage is 230 volts.
In most countries, mains power typically supplies electricity at 120 or 240 volts. The current flowing through mains power can vary depending on the electrical load, but it is typically around 10-15 amps for household circuits.
The source for an electromagnet can be any electrical supply. Batteries or derived from the mains, using a transformed and rectified supply.
The Fair Isle islanders do not use mains electricity because of their remote location and the high cost of connecting to the mainland grid. Instead, they rely on locally generated renewable energy sources like wind turbines and solar panels, along with backup diesel generators for when renewable sources are not sufficient.
Mains electricity is nothing but main source of power in an installation. From the mains the power is then branched out to different end usage.
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Chiefly portability and immunity to power blackouts.
Cells and batteries are portable and can be taken anywhere you go. Main electricity is stationary
Mains electricity is nothing but main source of power in an installation. From the mains the power is then branched out to different end usage.
In English, the "mains" is another word for the electricity supply.
my brain
UK mains electricity operates at a nominal voltage of 230 V (+10%/-6%), at 50 Hz.
The mains supply in Scotland is 50Hz.
no
Yes
keyboard can use both