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Induced Current Apparatus

Induced current is generated in a wire when a magnetic field changes. Here are some devices that use induced current: 

  • Electric generators
    Use electromagnetic induction to generate electricity from kinetic energy. 

  • Transformers
    Use electromagnetic induction to change the voltage of an electric current. Some transformers raise voltage, while others lower it. 

  • Magnetic brakes
    When brakes are applied, the metal wheels generate eddy currents due to exposure to a magnetic field. The interaction between the eddy currents slows down the wheels. 

  • Induction furnaces
    Use an induction system to heat materials placed inside a container. The materials are heated by eddy currents created by the induction system. 

  • Automobile speedometers
    Use eddy currents to determine the speed of a vehicle. A speedometer’s rotating magnet produces eddy currents in the drum as it rotates based on the vehicle’s speed. 

  • Galvanometers
    Detect any current induced in a coil. When a switch is closed, the galvanometer detects a current in one direction, and when the switch is opened, the galvanometer detects a current in the opposite direction. 

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