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Motion of a Charged Particles

Motion of a Charged Particles. When the velocity of a charged particle is perpendicular to a uniform magnetic field, the particle moves in a circular path in a plane perpendicular to B. Magnetic forces do NOT do any work on moving charges. Berapa besar jari-jari lintasan r ?. Applications.

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Motion of a Charged Particles

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  1. Motion of a Charged Particles When the velocity of a charged particle is perpendicular to a uniform magnetic field, the particle moves in a circular path in a plane perpendicular to B Magnetic forces do NOT do any work on moving charges

  2. Berapa besar jari-jari lintasan r ?

  3. Applications • A charge moving with a velocity v in the presence of both an electric field E and a magnetic field B experiences both an electric force qE and a magnetic force qv x B. • The total force (the Lorentz force) acting on the charge is

  4. Sources of Magnetic Field : electric current Jean-Baptiste Biot (1774–1862) and Félix Savart (1791–1841) performed quantitative experiments on the force exerted by an electric current on a nearby magnet.

  5. Biot–Savart law: where μo is a constant called the permeability of free space μo = 4π x 10-7 T∙m/A

  6. The total magnetic field B created at some point by a current of finite size:

  7. Contoh : Magnetic Field due to a Finite Straight Wire

  8. Magnetic Field due to a Circular Current Loop

  9. Ampere’s Law

  10. Solenoid We can use Ampere’s law to calculate the magnetic field strength inside an ideal solenoid. The line integral of B along this loop is

  11. What happens if the length of the solenoid is finite?

  12. Toroid

  13. TERIMA KASIH

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