The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point will be

A. 5 V

B. 18 V

C. 45 V

D. 15 V

Related Questions

  1. The diameter of a hydrogen atom is approximately ______ cm.
  2. What is the relative permittivity of air?
  3. Magnetic effects of the earth as a huge magnet with north and south poles.
  4. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  5. It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
  6. As the magnetic intensity decreasesa the relative permeability of a magnetic material
  7. If the distance between two magnetic poles decreases by 2 timesa the force between them
  8. Which of the following magnetic materials can be easily magnetized in both direction?
  9. What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
  10. Permeability means
  11. Flux linkages equals
  12. __________ is a substance of whose molecules consist of the same kind of atom.
  13. What is another name for relative permittivity?
  14. What is used as the insulating material or dielectric in an electric ion
  15. Who demonstrated the theory of electromagnetic induction in 1831?
  16. The science of adapting electronics to aerospace flight.
  17. Used to maintain strength of magnetic field
  18. When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
  19. One weber of flux is equal to _______ magnetic lines of force.
  20. Paramagnetic substance has a relative permeability of
  21. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  22. A good conductor has how many valence electrons?
  23. Which of the following has the least number of valence electrons?
  24. What is the main advantage of temporary magnets?
  25. The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
  26. Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
  27. The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability…
  28. Defined as the flux density produced in it due to its own induced magnetism
  29. The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
  30. If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…

Please do not use chat terms. Example: avoid using "grt" instead of "great".