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6. Nucleon Number (A)

  • The number of nucleons in any nucleus
  • The number of nucleons in a nucleus
  • The integer number of nucleons in a nucleus.

7. Fundamental particles

  • Particles which cannot be broken down into smaller components.
  • Particles which cannot be broken down into bigger components.
  • Particles which cannot be broken.

8. Electric Field Strength

  • Force per unit charge over a defined area
  • Force per unit positive charge
  • Force per unit negative charge

9. Proton Number (Z)

  • The integer number of protons found within a nucleus
  • The number of protons in a nucleus.
  • The number of protons found within a nucleus

10. Weber

  • One Weber is the unit of magnetic flux when a magnetic field of magnetic flux density 1 Tesla, passes at angles through an area of 1m2.
  • One Weber is the unit of magnetic flux when a magnetic field of magnetic flux density 1 Tesla, passes at right angles through an area of 1m2.
  • One Weber is the unit of magnetic flux when a magnetic field of magnetic flux density 1 Tesla, passes at right angles through an area of 1m.

11. Half Life

  • The average time taken for the activity of a radioactive source to decrease to one half of its original value. OR The time taken for the frequency of radioactive nuclei to decrease by ½.
  • The average time taken for the activity of a radioactive source to decrease to one half of its original value. OR The time taken for the number of radioactive nuclei to decrease by ½.
  • The time taken for the activity of a radioactive source to decrease to one half of its original value. OR The time taken for the number of radioactive nuclei to decrease by ½.

12. Activity

  • The number of radioactive decays per unit time. Unit = Bucquerels
  • The number of radioactive decays per unit time. Unit = Becquerels
  • The number of radioactive decays per unit time. Unit = Becqerels

13. Coulomb's law

  • The force between two electric charges is proportional to the product of the charges and inversely proportional to the square of the distance between them.
  • The force between two electric charges is proportional to the product of the charges and inversely proportional to the square of the distance between them.
  • The force between two magnets is proportional to the product of the charges and inversely proportional to the square of the distance between them.

14. Telsa

  • The unit of magnetic flux density, when a wire of length 1m carrying a current of 1A perpendicular to the field experiences a force of 1N.
  • The unit of magnetic flux linkage, when a wire of length 1m carrying a current of 1A perpendicular to the field experiences a force of 1N, through N number of wires.
  • The unit of magnetic field, a region of space where a magnetic pole experiences a force.

15. Capacitance

  • Charge stored per unit potential difference
  • Potential difference stored per unit charge (C)
  • Charge stored per coulomb.

16. Faradays Law of E.M. Induction

  • The magnitude of the induced e.m.f. is equal to the rate at which magnetic flux is cut. For a coil this becomes: The induced e.m.f. is equal to the rate of change of flux linkage.
  • The magnitude of the induced e.m.f. is equal to the rate at which magnetic flux is cut. For a coil this becomes: The induced e.m.f. is inversely proportional to the rate of change of flux linkage.
  • The magnitude of the induced e.m.f. is inversely proportional to the rate at which magnetic flux is cut. For a coil this becomes: The induced e.m.f. is equal to the rate of change of flux linkage.

17. Decay Constant, λ

  • The frequency of atoms decaying in unit time
  • The fraction of atoms decaying in unit time
  • The number of atoms decaying in unit time

18. Isotopes

  • Two nuclides (a nucleus with a distinct number of protons and neutrons) with the same number of protons but different numbers of neutrons
  • Two nuclides (an atom with protons and neutrons) with the same number of protons but different numbers of neutrons
  • Two nuclides (an atom with a distinct number of protons and neutrons) with the same number of protons but different numbers of neutrons

19. Magnetic Flux Linkage

  • The product of the magnetic flux and the number of turns on the coil. Unit = Weber turns.
  • The product of the magnetic flux and the number of turns on the coil. Unit = Weber.
  • The product of the magnetic flux divided the number of turns on the coil. Unit = Weber turns.

20. Time Constant

  • The time taken for the voltage or charge to drop to 37% of its original value.
  • The time taken for the voltage or charge to drop to 42% of its original value.
  • The time taken for the voltage or charge to drop to 50% of its original value.