electromagnetism

• A moving charge produces an electric current, which generates a magnetic field around it.
• Electric motors convert electrical energy into mechanical energy through the interaction between magnets and coils.
• The direction of the magnetic field is determined by Fleming's left-hand rule (thumb points to the direction of motion, fingers wrap around the wire).
• Paramagnetism is a form of magnetism caused by the spins of individual electrons or atoms interacting with each other.
• Magnetic fields can be created using magnets or electric currents.
• A moving charge creates a magnetic field around it, with the direction determined by the right-hand rule (thumb points in the direction of motion).
• The direction of a magnetic field is indicated by lines that encircle the field, and these lines are known as magnetic field lines.
• The strength of a magnetic field depends on the amount of electric current flowing in the conductor or the strength of the magnetic material.
• A magnetic field is a region in space where a magnetic force can be detected.
• Magnetic fields are created by moving electric charges or by magnetic materials.
• The strength of the magnetic force depends on the speed of the charged particle and its mass.
• Magnetic fields can be created by permanent magnets or induced by passing an electric current through a wire.
• Magnets have two poles (north and south) that attract or repel other magnets depending on their orientation.
• Like poles repel while unlike poles attract.
• Lenz's Law states that the polarity of the induced emf opposes the cause of its production.
• Faraday's law states that the induced emf in a closed loop is proportional to the rate of change of flux linkage with time.
• Electric charges create magnetic fields, while moving charges create both an electric field and a magnetic field.
• Electrically neutral objects do not have an intrinsic magnetic field unless they contain moving charges.
• This force causes the path of the electron to bend at right angles to the original trajectory.
• When an electron moves through a magnetic field, it experiences a force perpendicular to both its velocity vector and the magnetic field vector.
• Electric charges create magnetic fields, which can be used to detect charged particles such as protons and alpha particles.
• The direction of this deflection can be predicted using Fleming's left-hand rule.