Magnetism

• Magnetism: attraction or repulsion due to arrangements of electrons
• Magnetic Fields: Area around a magnet that is influenced by magnetic force
• Magnetic Domain: Large cluster of magnetic atoms aligning
• Magnetosphere: Region around Earth that is influenced by Earth's magnetic field
• To increase strength of magnetic field: Increase current, increase number of coils, change core material or size
• Motor: Change electrical energy to mechanical energy
• Generator: Change mechanical energy to electrical energy
• Step-up Transformer: Voltage increases, Current decreases
• Step-down Transformer: Voltage decreases, Current increases