Robert Millikan is famous for his experiment which demonstrated that electric charge is discrete, or quantized....

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Physics

Robert Millikan is famous for his experiment which demonstratedthat electric charge is discrete, or quantized. His experimentinvolved measuring the terminal velocities of tiny charged drops ofoil in air between two plates with a known voltage applied. Hetimed hundreds of them traveling both up and down in order tomathematically rule out the effects of gravity and drag, since hehad no way of measuring mass or diameter. His results showed thatcharge comes only in integer multiples of 1.6 10 19C. This iscalled the elementary charge. It is the charge on both electrons,negative, and protons, positive.
1. a. Where does charge excess charge reside on an object?Why?
b. Where is electric charge more concentrated on irregularly shapedobjects?
c. How do lightning rods work?
d. Why does a stream of water bend toward a charged object?
e. What are the three methods of charging an object?

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4.3 Ratings (787 Votes)

1 a the excess of charge reside on the surface of conductor because we know that electric field inside a conductor is always zero and hence the charges are pushed to the surface 1 b electric charge is more concentrated on sharp edges of an irregularly shaped objects due to the phenomenon known as Corona discharge which states that the surface charge density is more at sharper points 1c The lightening rod is See Answer

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