Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying conductors can attract and repel each other just like magnets?

A. Luigi Galvani

B. Hans Christian Oersted

C. Charles Coulomb

D. Andre Ampere

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  1. The force acting on a unit n- pole placed at that point is called
  2. A magnetic field is
  3. The K shell or the first shell has how many permissible number of orbiting electrons?
  4. Who discovered the most important electrical effects which is the magnetic effect?
  5. The force between two magnetic poles is _______ their pole strengths.
  6. A t/m is a unit of
  7. The electrons in the last orbit of an atom are called _______ electrons.
  8. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  9. The core of a transformer heats up when its primary is fed from an ac source because of
  10. The force between two charges placed a given distance apart ______ as the relative permittivity of the…
  11. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  12. Electric field intensity is a ________.
  13. If the value of 25 of a conductor is 1/230 per oCa then the value of 0is
  14. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  15. The temperature coefficient of resistance of eureka is
  16. There are how many compounds available in nature?
  17. When the relative permeability of a material is slightly more than 1a it is called ______ material.
  18. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  19. Amorphous solid is also called
  20. What is the practical unit of electrical energy?
  21. The force between two magnetic poles varies with the distance between them. The variation is ______…
  22. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  23. The force which set ups or tends to set up magnetic flux in a magnetic circuit
  24. If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
  25. The force between two magnetic poles is _____ their poles strength.
  26. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  27. What revolves about the positive nucleus in a definite orbit?
  28. Hydrogen is an example of a _____ material.
  29. A one cubic cm of copper has how many free electrons at room temperature?
  30. A substance that attracts pieces iron