stopping electric current

[Eoh-dee]

I need to stop an electric current without breaking the circuit; like turning off a flashlight remotely without touching it in any way. Is that possible?

[lemur]

Are you asking for a way to somehow neutralize current within a closed-circuit? Or are you asking for a way to break the circuit without having to deal with a fixed-location switch? I don't see how it would be possible to neutralize current unless someone knows something about creating counter-waves in the conductor that cancel out the waves of electricity, but this seems implausible and, if it was possible, could it be practically used in everyday applications like lights? Also, why would you want to cancel out current with counter-current since it would waste energy - plus I don't think it's possible anyway because energy cannot be created or destroyed, so any current that is flowing through a conductor has to go somewhere.

Edited January 28, 2011 by lemur

[ewmon]

Could you give us a general description of the circuit?

 

By touching, do you mean physically touching, or inserting a control mechanism with a remote controller?

[TonyMcC]

To stop dc current the circuit either has to be broken or part of the circuit has to somehow be changed to a very high resistance.

You could include a transistor in your circuit which could be operated (changed from low to high resistance) remotely rather like switching a tv on/off with a remote control.

If you don't mind the circuit actually being physically opened you could use a relay instead of the transistor.

[Solve]

You want to freeze (stop) the electrons in the circuit ?

 

 

 

 

Try to completely remove their Kinetic energy , but since u don't want to break the circuit, then it will eventually drain out the power source.