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
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