Ohm's law. Current is directly proportional to the applied emf and inversely proportional to the resistance in the circuit.
Increasing the voltage with a variable power supply or decreasing the resistance of the circuit.
Increase current by increasing voltage or decreasing impedence, or both.
There's only one way to do that: Increase the current (amperes) in the wire.
Only if the wire is running perpendicular to a magnetic field.
The electrons in a conducting wire are loose and can move freely. When the circuit is closed, a potential difference is set up across the terminals. The battery maintains this potential difference. Then the electrons in the wire move towards the positive terminal of the battery. This flow of electrons constitute the electric current.
The earthing wire does not normally carry current.
No. The larger wire can carry more current.
the current will increase
increase
There's only one way to do that: Increase the current (amperes) in the wire.
increase the strenght of the magnetic field. :)
-- Increase the current (amperes) flowing through the coil of wire that surrounds the electromagnet. -- Increase the number of 'turns' of wire in the coil.
there are 3 ways,*changing the number of coils of wire,*changing the current in the wire,*changing the material used for the core.sidenote - i just saw this answer and its perfect, really. simple and just the three points i needed for homework!how could you make them stronger
increase
If the current in the wire increases, the magnetic field also increases.
The temperature of the wire will increase and eventually like the "straw breaking the camel's back" the wire will fail if you apply enough current. It is like exceeding the current in a fuse, the wire essentially disintegrates.
Only if the wire is running perpendicular to a magnetic field.
If wire delivering a certain amount of current is made narrower, the resistance of the wire will increase. This will limit current, and the wire will warm up some. If the wire is made shorter, resistance will decrease. The electrical codes have well published limits on the amount of current different types of wire can carry.
Magnetism requires mass of some sort. Smaller magnet, smaller field. I would think that the same holds true with the wire. In the field of electromagnetism you will be dealing with a power requirement to achieve desired strength of field. So, to give you my best answer to your question is to increase the electrical input. If the wire is already magnetic, get a thicker diameter magnetic wire.