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Q: How much current will the lamp draw from the main line if a lamp is related 40w and 220v?
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How much current will the lamp draw from the main line if a lamp is rated 40W and 220V?

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How do you rewire a 220v lamp for 120v?

If your trying to plug in a 110 Volt lamp into 240 volt outlet the answer is simple. You must buy a step down transformer, or your lamp will burn out.


Why would a high watt lamp draw more current than a low watt lamp?

Power is measured in Watts, power (Watts) = E (volts) x I (current - amps) current is determined by the internal resistance (R) of the lightbulb, the lower the resistance the more current will flow. 120v x 0.5a = 60W 120V x 0.83a = 100W the 100W lightbulb will draw more current We also have Ohm's law: E(volts) = I (amps) x R (ohms) Household voltage stays the same at 120v we have for a 100w lamp: 120v = I x R R = 120v/0.83 amps R = 144.6 ohms for a 60w lamp: 120v = I x R R = 120v/0.5 amps R = 240 ohms The higher watt lamp has lower resistance.


How you check amp draw on compressor?

Divide the power rating (in watts) by the voltage (in volts). So if you use a 100 watt light bulb in a typical 110 volt lamp then it will draw 100/110 = .91 amps of current. Or plug a 1500 watt electric heater into a 110 volt wall socket and it will draw 1500/110 = 13.6 amps of current.


Can you plug a 220V. 800Watt lamp into 240V?

Yes, but you will get a higher wattage output than 800 watts, this means that the lamp will glow brighter. This connection will also shorten the life of the lamp because of the higher voltage. When you state "plug", it suggests that the connection will not be made if the plug can not fit into the receptacle.

Related questions

How much current will the lamp draw from the main line if a lamp is rated 40W and 220V?

xhunga kba? ?npakiana pluh kme


Does a lamp with a thick filament draw more current or less current than a lamp with a thin filament?

A lamp with a thick filament will draw more current. What restricts the current flow in the filament is the resistance of the filament which increases as the temperature of the filament increases. A thin filament requires less energy to get heated up that a thick one so less current to achieve threshold resistance. Also a thick filament provides a broader path for current so there is less resistance per increase in degree centigrade. For these two (closely related but distinct) reasons it will require more current for the filament to get heated up to threshold resistance.


What is the allowable voltage level for a hand held lamp?

220V


What happens to the current in a circuit if more lights are added?

Assuming you are referring to house lamps, these are always connected in parallel with each other. Each lamp will draw a current, the value of which depends on the wattage of the lamps. As each lamp is added, the supply current will increase by the amount of current drawn by that lamp.


Does a lamp with a thick filament draw more or less current than a lamp with a thin filament?

A lamp with a thick filament will draw more current. What restricts the current flow in the filament is the resistance of the filament which increases as the temperature of the filament increases. A thin filament requires less energy to get heated up that a thick one so less current to achieve threshold resistance. Also a thick filament provides a broader path for current so there is less resistance per increase in degree centigrade. For these two (closely related but distinct) reasons it will require more current for the filament to get heated up to threshold resistance.


Does a lamp plugged in but not on draw electrical current?

No, a lamp plugged in but switched off does not draw electrical current. The switch on the lamp has the electrical circuit in the open position. In open circuits no current will flow. As soon as you close the circuit the lamp will start using power at a rate that is the wattage of the bulb. It is this wattage that you pay your utility company to supply.


How do you rewire a 220v lamp for 120v?

If your trying to plug in a 110 Volt lamp into 240 volt outlet the answer is simple. You must buy a step down transformer, or your lamp will burn out.


How does the amount of current in a home circuit differ from the amount of current in a reading lamp?

The current in a reading lamp would be a small part of the total current in a home. For example, a home may have 100 amp service, while a reading light may draw less than 1 amp, so about 1% of the total.


Will the current in the light bulb connected to a 220v source be greater or less than when the same bulb is connected to a 110v source?

A: The current is not a function of voltage available but rather the power needed to light the lamp. To answer your question a 100 watts lamp will require 1.83 times more current for a lamp rated as 100 watts at 120 volts.It is a basic ratio 220:120AnswerI disagree with the previous answer. The power rating of a lamp only applies when the lamp is subject to its rated voltage -which is why both values are shown on the lamp (e.g. 60 W / 120 V).So, if you subject a lamp to less than its rated voltage, it will not achieve its rated power. In fact, the decrease in power will be significantly greater than the corresponding decease in voltage. It will certainly not 'compensate' by drawing more current!However, to directly answer your question, the current drawn by a lamp connected to a 220-V supply will indeed be greater than the current drawn by the same lamp connected to a 110-V supply.


Can you show me how to draw an alcohol barner?

Can you show me how to draw an alcohol lamp?


How do you rewire a 220V lamp to work on 110V?

The quick answer is you don't. Normally a 220 V fixture would be in a commercial location. Since Voltage = Current x Resistance the current for the 220 V case would be 220/R. Since R won't change your new current would be 110/R. Depending on the lamp type, the lower current will make the bulb dim or it won't light at all. Always use the proper voltage for a device to avoid dangerous situations.


Do you rewire a 110v lamp to work on 220v?

The quick answer is you don't. Normally a 220 V fixture would be in a commercial location. Since Voltage = Current x Resistance the current for the 220 V case would be 220/R. Since R won't change your new current would be 110/R. Depending on the lamp type, the lower current will make the bulb dim or it won't light at all. Always use the proper voltage for a device to avoid dangerous situations.