Hall Effect: Principle, Working, Applications and Importance in Modern Electronics

Category: Science & Technology → Physics / Electronics

Key Pointers

  • The Hall Effect occurs when a current-carrying conductor or semiconductor is placed in a magnetic field perpendicular to the current.

  • A voltage develops across the material in a direction perpendicular to both current and magnetic field.

  • This is called Hall voltage.

  • It can be used to determine:

    • Magnetic field strength

    • Type of charge carrier

    • Carrier concentration

  • Applications include:

    • Magnetic sensors

    • Current sensors

    • Position/speed sensors

    • Automotive electronics

UPSC Focus

Current + magnetic field → transverse Hall voltage.