Yes, the voltage listed on the bulb is the nominal voltage and it will work perfectly on a 120 volt circuit.
No, it is not safe. The lamp is rated for a certain voltage, 125 volts, and supplying 240 volts to it would exceed design safety margins. It is not just a case of changing the bulb. It would be a different story if the lamp itself were rated for 240 volts, but that's not what the question said.
You tell yourself the 125 volt receptacle is a 120 volt receptacle. They're the same thing.
yes
No, it is not recommended to plug a 125 volt 30 amp plug into a 120 volt 30 amp outlet. The voltage difference may cause damage to the equipment and pose a safety hazard. It is important to use the correct voltage outlets for your devices.
125% of 120= 125% * 120= 1.25 * 120= 150
-120
125 x 120 = 15,000
NO! There are 50 bulbs in a 2.5 volt string or 125 volts. There are 35 bulbs in a 3.5 volt string or 122.5 volts. If you put 50 3.5 volt bulbs in you will have 175 volts and most american house have 110 volt service so you will have dim bulbs.
Yes. The 125V is the rating of the bulb, which indicates the voltage it was manufactured to withstand. The voltage it is actually operated at does not have to be precisely 125V; As a matter of fact the voltage coming from your wall socket can vary from as low as 100VAC all the way to above 125 VAC. So, screw that bulb in and light up your world!
Depending on the brand, it will give about 18.000 Lumens and equals a 100W HPS lamp
Yes.
The common factors of 120 and 125 are: 1 and 5