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A fundamental property of matter which causes it to experience electromagnetic forces.

0
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The positive charge on the dome creates an electric field. The field acts on two components of your hair, repelling positive charges, and attracting negative charges (i.e. your hair, though neutral … electrons in the hair and are attracted to air molecules which (because of the electric field) are ALSO polarized (and present a positive end toward the hair, which makes them attractive to negative charge
answered Apr 14 '17 by Whit3rd
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halts when buildup of charge creates sufficient voltage drop to reach equilibrium between ohmic (field-driven) current and diffusion-driven current. There may only be a fraction of a volt in such a … contact potential, but the very short distance between objects in contact means high capacitance. Capacitance equals charge divided by voltage, so the charge can be significant. Of course, when you …
answered Dec 16 '16 by Whit3rd
3
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Strong peaks on a graph are expected if charge is packaged in discrete units, but not if charge is infinitely divisible. One constructs a histogram of the charge measured, and accumulates a few … thousand data points, with very fine drops in a relatively high field. The intent was to only observe oil drops with small charge, such as would be held stationary in gravity with a high E field if the …
answered Apr 18 '17 by Whit3rd
10
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Yes, that is possible, but only in a space filled with charge (of such a concentration as to produce the effect). Such a field has divergence (which means it cannot happen in empty space) but no curl (which would necessitate currents as well as charges). …
answered Mar 11 by Whit3rd
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Yes, of course a positively charged object can have a negatively charged surface. Consider a hollow sphere of metal,charged A, with an insulated positive-charge, B, inside the hollow. The … exterior surface of the sphere will have the sum (A + B) charge, but the interior surface of the sphere will hold an induced (-B) charge. …
answered Sep 7 '18 by Whit3rd
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voltage value, unless 'infinity' were such a value. One cannot remove part of the electron charge, so it cannot be said what energy it takes to do so. As for capacitance, that is (dimensionally) a … distance, and not a property that is directly connected with the charge or mass of an electron. In a sense, a single electron just doesn't have a particle property to derive capacitance from. So …
answered Dec 12 '17 by Whit3rd
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Even a slow oscillating charged object does create light; that's how a radio antenna emits (long-wavelength) electromagnetic radiation, a kind of light. There is a radio-frequency current forced int …
answered Jul 18 by Whit3rd