Magnets affect electrically charged particles and electrical conductors. Magnets have the ability transform electrical energy without losing their own energy. These effects can perform useful functions, for example:

• Electrical-to-mechanical effects are key in the function of motors, loudspeakers, and equipment that requires charged particle deflection.
• Mechanical-to-electrical effects are useful in generators, motors and microphones
• Mechanical-to-heat effects facilitate eddy current and hysteresis torque devices.
• Mechanical-to-mechanical affects, Magnetic separators, Sensors.
• Other effects of magnets include magneto-resistance and magnetic resonance.