Setting up a magnetic field?

Question

For my project my idea is to grow a small plant in the middle of a tomato cage that is electrically magnified. So i was going to build a tomato cage using iron, and then wrapping insulated copper wire around it, and see what the affects would be on the growing plant. My issues are:
1 - I'm going to use a Voltage regulator plugged into a power outlet to maintain constant current but how much will i actually need is the question. I know it's determined by the length of wire and how big I would like the field, but i don't know the formula or how to figure it out.
2 - What kind of field would a tomato cage wrapped in just one wire even generate? Would the the supporting legs and each ring going up the side to give the cage its shape create opposing fields? Where would be the positive and negative sides of the field? Should i use just one long wire and a lot of amps or several shorter wires with less amp? Or is there a better idea all together?
As you can see i have a lot of questions about this. So any information would help, thanks.

Anonymous · Accepted Answer

Magnetic fields have no effect on tomato plants. Wrapping a wire around the cage will only generate a gauss or two of magnetic field in any case, and the earth's magnetic field is already 0.6 gauss.
If you obtained a magnetron magnet, then you could get a field of a couple of thousand gauss over about a one inch gap. You could plant a tomato seed in a very small pot in this gap, but the magnet would still have no effect.

Why not use an electric field instead? Bury a couple of metal plates either side of the seedling, and pass about 10 amps of current for a day or two. This will kill the plant. Then experiment to find the minimum lethal dose of current, and then measure the voltage to calculate the electric field in volts per meter. Use a charger for a car battery to provide the current. And don't forget to monitor the temperature of the soil to see if it is just the heat that kills the plant.

異域秦後人 · Answer

You cannot create magnetic field by using a steel cage. There  shall be no more magnetic field because the south and north poles are sealed together with the cage. Poles must be built in pair and separating them and facing each other.

Anonymous · Answer

confident there's a electric and magnetic field around the present donning conductor. Air could additionally habit (very week conductivity) electrical energy. because of the fact, an appropriate insulator could desire to have resistance of infinity, yet very nearly no longer something as countless resistance. so there is leakage of electric filed around the conductor. The voltage is steadily decreased around the conductor and includes 0. Thats somewhat relies upon on the voltage interior the conductor.

Setting up a magnetic field?

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