Usually the 60-watt limit is used to prevent the lampshade overheating, so a 75-watt bulb should not be used.
But if more brightness is required, try a low-energy bulb because a 15-watt one gives the same light as a 75-watt incandescent (old-style) bulb. Or a 20-watt would be even brighter.
If the socket threads of the lamp are the same then yes the bulbs can be interchanged. The 5 watt bulb will glow brighter than the 4 watt bulb. If by a 4 watt light you mean a 4 watt fixture, then it is not recommended to place a larger wattage lamp in a fixture that is rated by the manufacturer at a specific operating wattage
Providing the lamp is operating at its rated voltage, a 60-W lamp will require 60 W. Thought that should be self-evident!
Question is not clear; however, if you were to install a 120watt bulb into 90 watt rated socket then it may work for a while for some. yet, even if it works then after a while will start burning quite often and the fixtures itself will be damaged permanently
Yes, a 103 volt source will light a 60 watt light bulb. The relationship of the bulb's wattage output at a lower voltage, as to the normal voltage that the bulb is rated to operate on, the light output will be lower.
A desk lamp which takes a regular size bulb. You could easily change it to a higher watt.
If the socket threads of the lamp are the same then yes the bulbs can be interchanged. The 5 watt bulb will glow brighter than the 4 watt bulb. If by a 4 watt light you mean a 4 watt fixture, then it is not recommended to place a larger wattage lamp in a fixture that is rated by the manufacturer at a specific operating wattage
40 watt light bulb
Providing the lamp is operating at its rated voltage, a 60-W lamp will require 60 W. Thought that should be self-evident!
Provided the bulb is rated at 60 Watts or less and the fitting is compatible, yes.
Question is not clear; however, if you were to install a 120watt bulb into 90 watt rated socket then it may work for a while for some. yet, even if it works then after a while will start burning quite often and the fixtures itself will be damaged permanently
The light bulb needs to match the ballast in the fixture.
The voltage isn't decided by the lamp, but by the supply the lamp is hooked up to.
Yes, a 103 volt source will light a 60 watt light bulb. The relationship of the bulb's wattage output at a lower voltage, as to the normal voltage that the bulb is rated to operate on, the light output will be lower.
Of course
A desk lamp which takes a regular size bulb. You could easily change it to a higher watt.
A 60 watt light bulb is a light bulb with 60 watts capacity. When talking about watts, you're talking about the power that is transferred from the appliance to the accessories. Therefore, the light bulb labeled "60 watts" takes 60 watts to light up. A 60 watt light bulb will not be as bright as a 120 watt light bulb.
A little bit less than a 25 watt incandescent bulb - the the table below:Bulb brightnessA 100 watt Bulb is rated at approximately 1700 lumensA 60 watt incandescent bulb is rated at approximately 800 lumensA 40 watt bulb is rated at approximately 400 lumensA 25 watt bulb is rated at approximately 180 lumensA 4 watt night light bulb is rated at approximately 20 lumens