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What else can I help you with?
WHICH energy source to power a mobile phone?
Rechargeable battery or mains electricity.
This is written on the user manual of an electric shaver that it should be charged continuously and when the battery is low. Why is that?
The electric shaver appears to be capapble of operating on both mains electricity and the internal battery. Mains electricity will keep the battery recharged but if you use the battery to run the shaver then soon or latter the battery will run out of elctricity. Battery Low means No Working Shaver.
What do laptops eat?
they eat your memory. Its so annoying. And battery power. And mains electricity. And kebabs!?!?!?!
What are the advantages of using a battery instead of the mains electricity?
Chiefly portability and immunity to power blackouts.
What is the difference between electricity mains current and the current from a battery?
Answer for countries in Europe and other world areas running a 50 Hz supply service.grid current (the electricity mains) is *AC (alternating Current, The voltage follows a sinus curve going from (here in Europe) 240 V to -240 V and back fifty times second.The current from a battery (like from my car battery (actually a lead acid accumulator) is DC mine is 12 V. There are batteries in many sizes for many different uses.I can pull more amperage from my car battery (during a few seconds) than I can from my wall socket!
What are the advantages of using a cell or battery instead of a mains electricity?
Cells and batteries are portable and can be taken anywhere you go. Main electricity is stationary
Do household battery chargers draw electrical power when not charging but remain plugged in?
Everything that is plugged into the mains socket and switched on will use electricity even if it's a battery charger with no batteries in. So yes they do draw electrical power from the mains.
Why some things need mains electricity and others need battery?
Portable devices that do not consume large amounts of power can be run on batteries. Some battery powered devices can also be powered by mains - running a 'battery eliminator' - to save from having to purchase batteries. Devices that consume large amounts of power are usually best powered by mains.
What is the difference between mains electricity and batteries?
The first difference is that mains power is AC (Alternating Current) whereas batteries are DC (Direct Current). The second difference is the amount of available amperage; mains have the capacity to deliver higher current for an indefinite amount of time, where batteries will drain faster the more current is pulled. Your normal A/AA/C/D/9V batteries only produce 500 milliamps (1/2 an amp) at their nominal voltage (1.5 or 9v). Mains current (for the U.S.) is 110 or 220 volts in residential. Commercial mains, such as in factories, can be 110, 208, 220, or 440 volts. A big difference between residential and commercial electricity is the available phasing. But that's another discussion.
How electricity can help the laptop?
Any computer needs electricity to work. Laptop computers have an internal battery that powers the computer when you are away from your work desk. If you are return to your work desk or the battery is running out of charge you can still attach the laptop computer to mains electricity.
What are the advantages and disadvantages of mains electricity?
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.
How is a TV powered?
A typical TV is powered by mains electricity. There are also 12 volt and battery versions for use in campers etc
