An electromagnet is, in very simple terms, a material that behaves like a magnet when electricity passes through it and loses the magnetic properties when electricity is switched off. A simple example of an electromagnet is an iron nail wrapped with coils of wire connected to a battery. The magnetic field strength of an electromagnet of this type is given as:
H = I x N / L
Where H is the magnetic field strength,...
An electromagnet is, in very simple terms, a material that behaves like a magnet when electricity passes through it and loses the magnetic properties when electricity is switched off. A simple example of an electromagnet is an iron nail wrapped with coils of wire connected to a battery. The magnetic field strength of an electromagnet of this type is given as:
H = I x N / L
Where H is the magnetic field strength, I is the current passing through the coil, N is the number of turns and L is the length of the conducting wire.
Thus, magnetic field strength is directly proportional to the number of turns in the coil and can be increased by increasing the amount of these turns (or N). The magnetic field can also be increased by increasing the current passing through the coils. Another way of increasing the magnetic field strength is by changing the core material to something that can concentrate the magnetic flux.
Hope this helps.
No comments:
Post a Comment