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Who discovered the most important electrical effects which is the magnetic effect?

A. Hans Christian Oersted

B. Sir Charles Wheatstone

C. Georg Ohm

D. James Clerk Maxwell

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  1. The magnetic flux of 2000 lines is how many Maxwells?
  2. An electron- volt (eV) is a unit of
  3. The magnetic field of a magnetized iron bar when strongly heated
  4. If the number of valence electrons of an atom is more than 4a the substance is called
  5. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  6. The electrons in the last orbit of an atom are called _______ electrons.
  7. Amorphous solid is also called
  8. The process by which an emf and hence current is generated or induced in a conductor when there is a…
  9. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  10. Which of the following is a diamagnetic material?
  11. What is the practical unit of electrical energy?
  12. The conduction of electricity across the surface of a dielectric is called
  13. Core materials of a good relay have _________ hysteresis loop.
  14. A negative ion results when an atom gains an additional
  15. As the magnetic intensity decreasesa the relative permeability of a magnetic material
  16. A law that states that the polarity of the induced voltage will oppose the change in magnetic flux causing…
  17. The core of a magnetic equipment uses a magnetic material with
  18. What is the value of the absolute permittivity of air?
  19. The lagging effect between flux density of the material and the magne
  20. A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the…
  21. An atom or a group of atoms that carries a net electric charge.
  22. The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
  23. Which element has four valence electrons?
  24. Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as
  25. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  26. Paramagnetic substance has a relative permeability of
  27. Magnetic effects of the earth as a huge magnet with north and south poles.
  28. Back emf refers to the
  29. When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
  30. The idea of preventing one component from affecting another through their common electric and magnetic…