Question

the strength of an electromagnetic does not depend on the number of turns off the wire around the core true or false​

Answer 1

Answer:

False

Explanation:

More turns will make more electrons go around and when more electrons go around then the interaction will be more which will create a stronger magnetic field thus leading to better electromagnetism. Also The Power Will Increase If You Put More Electricity

Answer 2

t

The Electromagnet

A simple electromagnet can be created by wrapping a coil of wire around a soft iron core, such as a large nail

We now know from the previous tutorials that a straight current carrying conductor produces a circular magnetic field around itself at all points along its length and that the direction of rotation of this magnetic field depends upon the direction of current flow through the conductor, the Left Hand Rule.

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In the last tutorial about Electromagnetism we saw that if we bend the conductor into a single loop the current will flow in opposite directions through the loop producing a clockwise field and an anticlockwise field next to each other. The Electromagnet uses this principal by having several individual loops magnetically joined together to produce a single coil.

Electromagnets are basically coils of wire which behave like bar magnets with a distinct north and south pole when an electrical current passes through the coil. The static magnetic field produced by each individual coil loop is summed with its neighbour with the combined magnetic field concentrated like the single wire loop we looked at in the last tutorial in the centre of the coil. The resultant static magnetic field with a north pole at one end and a south pole at the other is uniform and a lot more stronger in the centre of the coil than around the exterior.