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.