p=r*i
AC stands for Alternating Current and DC stands for Direct Current.
With electricity from the mains, the current chages direction 50 times each second, so it is called alternating current.
Volts direct current eg battery As opossd to Vac wich is volts altinating current eg mains supply
What is a sinusoidal wave? This is a wave that appears to have curves. AC current/voltage. If you see a wave on a ossiloscope of what our AC (Alternating current) mains voltage that will be the answer to the question. DC (direct current) does not appear to have the same qualitys
Mains supply provides alternative current while battery provides direct current.
You get power, which is voltage * current (so both!).
You can test the water for chlorine levels using a pool water test kit. Mains water typically contains chlorine, which is used to disinfect the water. If the water shows a chlorine residual, it is likely mains water.
p=r*i
We're deeply intrigued to know where the questioner resides, and from what experience this question arises. We know of no location in the world, and no small-scale situation, where direct current is preferred for the mains supply.
AC stands for Alternating Current and DC stands for Direct Current.
The electrical supply authority for your area
Current limiting is the practice in electrical or electronic circuits of imposing an upper limit on the current. The simplest form of current limiting in mains is fuse.
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.
Infinity
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!
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.