Standard household voltage in this country is between 110 and 120 volts. So, "Why," you might ask, "would someone rate a bulb at 130 volts?".
A bulb that says it's 100 watts, but if you read the fine print it only achieves this output at 130 volts. Thus, in the reality of your 120 volt home, you only get a 92 watt bulb. What's worse, since the light is effectively dimmed, it glows slightly orange instead of white as a bulb would at it's rated voltage. I found out 130 volts bulb last longer!! as it wil
not get as hot. resistence does increase not much ,bulbs sre designed, i will locate the formulasand post here, you raise the voltage and current go up.