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| An electric field is created by electric cahrges. It is region where other electric charges will feel a force. |
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| The force per unit charge at a point in an electric field. The units are NC-1 or Vm-1. |
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| Two electric charges exert an electrical force on each other that is proportional to the product of their own electric charge and inversely proportional to their separation squared. |
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| A magnetic field is created by moving electric charges. Moving charges in a magnetic field will feel a force. |
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| MAgnetic flux is the magnetic field lines. |
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| The density of the magnetic field lines at a point in the magnetic field. As a consequence it actually describes the strength of the magnetic field at that point. The unit for magnetic flux density is the the Tesla (T) |
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| An induced current or e.m.f. is in a direction so as to produce effects which opposes the change that is producing it. For example the e.m.f. induced in a generators coil will cause a force to oppose the movement of the coil because of the interaction between its own magnetic field and the one that it is in. |
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| Capacitiance is the amount of electric charge stored if there is a potential difference of 1 volt across the capacitor. It is measured in Farads (F) |
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| The time constant which is equal to RC and is measured in seconds is the time it takes for the current/quantity of charge/ potential difference to fall to 1/e or 37% of its inital value. |
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| Number of nucleons (protons or neutrons) inside the nucleus of an atom. |
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| The number of protons in the nucleus of an atom |
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| Atoms which have the same number of protons (hence they belong to the same element) but different numbers of neutrons. |
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| A very strong force but with an incredibly small range between the nucleons in an atoms nucleus. This force balances the electrostatic repulsion between the protons. |
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| A particel which is made up of two or three quarks. These particles are affected by the strong force. |
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| These particles like the electron are considered to be fundamental (cannot be broken down anymore). Therefore they do not consist of quarks and are not affected by the strong nuclear force. |
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| The proton or neutron are examples of baryons. They consist of three quarks. |
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| A hadron which consists of two quarks |
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| A fundamental particle. These particles have several properties - Baryon number(B), charge (Q), strangeness (S) and Charm, Bottomness and Topness(the last three are not required for conservation analysis) |
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