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The straight line passing through the two poles of magnet is called

A. Real axis

B. Cartesian axis

C. Magnetic axis

D. Imaginary axis

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  1. The temperature coefficient of resistance of eureka is
  2. The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…
  3. One ampere- turn is equivalent to _____ gilberts
  4. The core of a magnetic equipment uses a magnetic material with
  5. What is the unit of magnetomotive force?
  6. Defined as a closed path in which magnetic induction or flux flows
  7. A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
  8. A permanent magnet does not exert a force on
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  10. The K shell or the first shell has how many permissible number of orbiting electrons?
  11. When a current carrying conductor is placed in a magnetic fielda the maximum force will act on the conductor…
  12. The force which set ups or tends to set up magnetic flux in a magnetic circuit
  13. The magnetic field around the conductor is determined by the
  14. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  15. A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the…
  16. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  17. If the length and area of cross-section of a wire are doubleda then its resistance
  18. Who discovered the most important electrical effects which is the magnetic effect?
  19. The emf induced in a coil due to the changing current of another neighboring coil is called
  20. Another term for corona discharge.
  21. The diameter of a hydrogen atom is approximately ______ cm.
  22. The unit of flux is _____ in cgs system.
  23. Which of the following statements is TRUE?
  24. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  25. A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
  26. The mass of proton is __________ the mass of an electron.
  27. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  28. The resistivity of a conductor ___________ with an increase in temperature.
  29. If the number of valence electrons of an atom is more than 4a the substance is called
  30. If the value of 0 a conductor is 1/234 per oCa then the value of 18is