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Unformatted text preview: hat is the brightness of A relative to its What is the brightness of A relative to its former brightness? • (1) 0.44 (2) 0.56 (3) 1.78 (4) 2.25 (5) none of these • Two isolated conducting spheres are separated by a large distance. Sphere 1 has a radius of R and an initial charge 2Q while sphere 2 has a radius of 3 R and an initial charge 8Q. A very thin copper wire is now connected to the spheres. Charge flows between the spheres until they reach the same electrical potential . How much charge will be transferred from sphere 2 to sphere 1? (Note that the charge transferred can be positive, negative or zero .) (1) Q/2 (2) 2Q (3) –Q/3 (4) 3Q (5) None of these A Formula sheet...
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 Spring '08
 Any
 Physics, Charge, Current, Electric Fields, Electric Potential, Resistance, Magnetic Field, Electric charge, initial charge, single page formula

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