I suppose this can be done with some wiring around it and then add voltage with heavy current to the wiring.
If the electricityflow is correct, it will magnify the magnetic fields. If not, the magnetic fields can even be reversed.
I do not think this can make it permanently stronger.
It might make it weaker, espechally if you reverse the polarity of the magnetic fields, but how permanent this is is by me unknown.
It will only be stronger as long as the power is connected.
The wiring itself and the voltage to use is a different scientific thing :-)
Do never use electricity from mains for this. Only small batteries, and even so, the batteries may in worst case explode, or even heat up the wire so as to give you instant 3rd degree heatburns on your fingers/hand holding magnet when trying.
Regards.
As current increases, the electromagnet strength will increase.
-- Increase the current (amperes) flowing through the coil of wire that surrounds the electromagnet. -- Increase the number of 'turns' of wire in the coil.
Yes
Yes
using a stronger ferromagnetic material for the core. :)
Add a battery
For a simple copper wire around iron nail electromagnet, increasing the number of rounds the copper wire makes around the nail will increase the electromagnet's strength. Also, increasing the voltage applied(adding a battery) will increase the magnetic field.
-- Use greater length of wire. -- Wind it into more turns around the coil. -- Decrease the diameter of the coil. -- Increase the electrical current through the coil. Each of these actions will increase the strength of the electromagnet.
No, as in this case,the rod is the magnet,and the strength of a magnet does not depend on its size.
An electromagnet is temporary because the field disappears when the current is switched off.
a donut
a donut