I know this is a stupid qestion. But what puzzles me is-- why current draw goes down when Voltage increases?

I know this is a stupid qestion. But what puzzles me is-- why current draw goes down when Voltage increases. As in a device my draw 5 amps using 220 but 10 amps using 110v.

Would seem that voltage is directly proportional to Current and indirectly proportional to Resistance. Asked by martin1414 1 day ago Similar Questions: stupid qestion puzzles is current draw Voltage increases Recent Questions About: stupid qestion puzzles is current draw Voltage increases Education & Reference > Homework.

Similar Questions: stupid qestion puzzles is current draw Voltage increases Recent Questions About: stupid qestion puzzles is current draw Voltage increases.

You haven't given the resistance for either one, using ohms law the resistance of the first one 220/5= a resistance of 44 ohms the second 110/10 = a resistance of 11 ohms. So I'm not really sure what you are talking about. Ohms law says:E-IRI = E/RR = E/I .

I just notice on lots of equipment the current draw is much more using 110v then it is for 220v. Example, our forklift charger can be hooked up to 110v or 240v. However, the current is 70 Amps using the 110v and only 30 Amps using 240v.

Just trying to understand in more concrete way. I guess should just stick to the formula. UGH martin1414 1 day ago .

You have to look at the overall picture to get clarity. In the case of the scenario you are looking at, yes, increasing voltage across a resistance increases amperage as well; but converting to a higher voltage system with the same LOAD reduces the amperage. An 110V/1100W heater draws 10 amps.

A 220V/1100W heater draws 5 amps. - note that the resistance of the 220V heater is higher than the resistance of the 110V heater.

In the case of your forklift charger: it delivers the same voltage and amperage regardless fo your input voltage. So at twice the input voltage, it requires only half the amperage to maintain the same output amperage. - again, the resistance changes.

Thanks for the answer. Makes makes sense now! Martin1414 1 day ago .

The part were you mention converting to a higher voltage sys with the same load brings the clarity! Martin1414 1 day ago .

I've found that when I'm confused about something there is always one key element I have missed - looks like that was the element.

I wish I could remember all I've told about chargers, but there must be a great difference in the two charger electric circuits. The charger is usually charging at a different rate depending on the need. I believe it is about watts, not the usual E=IR.

The 220 vs 110 is all about watts and power used. Check this site for a start: science.howstuffworks.com/environmental/... htm.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.