What would increase the strength of an electromagnet?

Answer 1

1. More coils of wire around the magnetic material.
2. More current through the wire in the coil.

Increasing the current flowing through the wire

Increasing the number of loops of wire

putting a piece of iron inside the loops of wire apex :)
Increasing the current flowing through the wire

Increasing the number of loops of wire

Answer 2

- A relative decrease in electric current in the electromagnet, since Ampere's law states that electric current produces a magnetic field relative to the intensity of the current produced.

- Decreasing the number of windings around the coil, or spacing them more widely.

- Raising the temperature of the magnet, which increases the resistance.

Answer 3

We all know that all magnetism is due to circulating electric currents. In magnetic materials the magnetism is produced by electrons orbiting within the atoms; in most substances the magnetic effects of different electrons cancel each other out.

Also, the strength of a magnet depends on the wall thickness of a magnet. And, it's categories by it's maximum energy products, which is the measure of magnetic force of attraction. So, the answer as per question is to hammer it, as hammering a magnet will affects all the above properties like electrons won't orbit within the atoms anymore, wall thickness will decrease and accordingly the magnetic force of attraction will also decrease. Not just hammering , exposing the magnet to fire will give you the same result.

Answer 4

Increasing the number of turns in the wire coil, increasing the current flowing through the coil, and using a core material with high magnetic permeability such as iron can all increase the strength of an electromagnet.

Answer 5

less voltage, thicker wire, not firmly wrapped around the core

Answer 6

Decreasing the voltage
Straightening the wire

Answer 7

a magnet can be reduced in strength or rendered useless by introducing a larger magnet into the same area.

Answer 8

Using fewer loops of wire per meter in the coil. Decreasing the current in the wire and removing the iron core will not work.

Answer 9

B = u n I / 2 r

So B can be increased by increasing the number of turns (n)

By increasing the current (I)

By reducing the radius of the coil (r)