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47 Cards in this Set
- Front
- Back
- 3rd side (hint)
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study of stationary charges |
Electrostatics |
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who discovered the electric charges |
Benjamin Franklin |
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the fundamental property of matter |
Electrix charges |
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carried by elementary particles |
Electric charges |
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how did the electric charges discovered |
by flying a kite during thunderstorm |
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glass rod rubbed with silk |
positive electricity |
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ebonitw rubbed with animal fur |
negative electricity |
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where did the discovery happened |
Philadelphia (1752) |
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Bejamin Franklin discovered the electric charges with his |
son (William) |
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JJ Thomson |
presence of electron |
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Ernest Rutherford |
contains proton |
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charges are measured in |
Coulomb (C) |
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why there is attractive force between neutral and charged particles? |
charge separation means that attraction occurs |
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Interaction of charges |
positively charges particles are attracted to negatively charged objects but repelled by any other positively charged. |
define |
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materials that permit the electric charge to move easily from one region to another |
Conductors |
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give 3 examples of conductors |
silver copper sea water |
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materials do not let electric charge to pass through |
Insulators |
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give 3 examples of insulators |
wood oil rubber |
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give the 3 subatomic particles |
electron proton neutron |
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transferring electrons |
Ionic Bond |
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sharing electrons |
covalent bond |
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objects become electrically charged when they are rubbed against another material |
Charging by Friction |
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electrons may be transferred from one material onto the other |
Charging by Friction |
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Triboelectric series aka |
Electronegativity scale |
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ranks the material based on their tendency to acquire charge |
Triboelectric series |
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quantifies the amount of energy released when an electron attaches to the aton |
Electrons Affinity |
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the higher the electron affinity... |
the greater its tendecy to attract electrons |
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Charging by Conduction aka |
charging by contact |
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occurs when an object is in contact with neutral object |
Charging by Conduction |
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objects can also be charged if they are not in contact |
Charging by Induction |
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carries the normal voltage to the appliance |
hot wire |
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carries the current returning to the appliance |
neutral wire |
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is a wire connected to the ground |
round prong |
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Law of Conservation of Charge states that... |
algebraic sum of all the electric charges in any closed system is constant. |
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charge is not created nor destroyed; it is merely transferred from one body to another |
Conservation of Charge |
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described the force between two charges using a torsion balance |
Charles - Augustin de Coulomb |
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what did Charles - Augustin de Coulomb used in his experiment |
torsion balance |
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COULOMB'S LAW states that... |
the magnitude of the electric force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them . |
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what is the mathematical statement of Coulomb's Law |
Fe = k|q1q2| ÷ r2 |
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Fe is |
the electrostatic force |
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q1 and q2 |
the charges that are interacting |
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r is |
the distance separation between the two charges |
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k is |
constant with an equal value of 9×109 Nm2/C2 |
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force is always |
positive |
positive or negative |
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same sign |
repulsive |
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opposite signs |
attractive |
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q1 has a greater charge than q2 |
TRUE |
TRUE OR FALSE |
