electricity & magnetic

• Magnets are any material capable of attracting magnetic materials, creating a magnetic field, which have two poles: the south pole and the north pole.
• Induced Magnetism: When a piece of unmagnetized magnetic material touches or is brought near to the pole of a permanent magnet, it becomes a magnet itself.
• Magnetic Induction: The process by which a substance, such as iron or steel, becomes magnetized by a magnetic field.
• Temporary magnets are magnets that perform like permanent magnets when in the presence of a magnetic field, but lose magnetism when not in a magnetic field.
• Permanent magnets are magnets that retain their magnetism once magnetized.
• Electromagnets are wound coils of wire that function as magnets when an electrical current is passed through.
• The attractive property of magnets is that they attract other magnetic substances like iron, cobalt, and nickel.
• The repulsive property of magnets is that like magnetic poles repel each other and unlike magnetic poles attract each other.
• Magnetism refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects.
• The magnetic field is the region surrounding a magnet in which the force of the magnet can be experienced.
• Magnetic field lines always start from the north pole and end at the south pole.
• Inside the magnetic field, the field lines are from the south pole to the north pole.
• Electric current is electric charge in motion.
• The field is strong when the lines are close together, and it is weak when the field lines move apart from each other.
• Positive charge (protons) and Negative charge (electrons) are types of electric charge.
• Electric field lines provide a means to visualize the electric field.
• Strength of magnetic field weakens as field lines spread out.
• Magnetic field strength depends on the closeness of the magnetic field lines.
• Electric field lines start from positive charge and end on negative charge.
• Electricity is the presence and the flow of electric charges.
• The closer the magnetic field lines, the stronger the magnetic field.
• Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
• Magnetic field is strongest at the poles of a magnet.
• The unit for current is Ampere (A).
• Field lines never intersect each other.
• Electric field is the region around the charge particle within which the other charges experience the force of attraction and repulsion.
• Electric field lines are a vector quantity that have arrows showing the direction of electric field.