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No.
AC (Alternating Current) usually provided at either 110V or 220V.
25w
The fact that it's supposed to. Voltage is stated as the difference between the two wires carrying electricity to the load. When they bring power to the house from the utility, you get two wires carrying 110v but they're 180 degrees out of phase. Imagine one carries positive 110v and the other carries negative 110v. If you hook one of these wires plus a neutral (zero volts) to the load, you get 110v--110v over 0v. If you hook both of them to the load, you get positive 110v over negative 110v, or 220v. So...red to white is 110v, black to white is 110v, red to black is 220v.
No. Freinds don't let freinds do shabby electric work. Do it right.
1.7amp
Use a transformer to lower from 220 to 110V.
No
Do not do this.
The breaker will blow because you are effectively causing a short circuit.
220v and 110v are almost the only voltages used around the world because they are the most efficient.
Depends. Some smaller stuff can usually run on both, in which case it will be printed on them. If it isn't, you can't run a 220v item on 110v.