21 electic field 1

21 electic field 1 - 21 Electric Field 1 Covering all...

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21 Electric Field 1 Covering all sections
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2 Electric Charge Q = ± Ne, (N = integer) Charge of Matter q proton = +e q neutron = 0 q electron = -e Examples: He = (2p, 2n, 2e - ) charge = 0 He + = (2p, 2n, 1e - ) = +1e
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3 Like repel, Unlike attact Relative electron affinity
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4 Conductors “free” electrons electron motion = “conduction”
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5 Evidence of electron conduction away from central metallic element (gold leaf repulsion)
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6 Charging by Induction (1 of 3)
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7 Charging by Induction (2 of 3)
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8 Charging by Induction (3 of 3)
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9 attraction of an uncharged conductor
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10 “Ground” = source or sink of charge
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11 Charge re-distributes quickly after rod moves far away
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12
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13 Example in 2D
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14 Electric Field force per charge-size [N/C]
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15 Direction of E
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16 Electric Field of a Point Charge Electric Field due to Multiple Point Charges
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17 Example: Approximating E above Uniform Line of Charge Given: 6 m long uniform strip of charge Q lies along x axis 0, 6 m. Estimate E at P = (6, 2)m by breaking strip into 3
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21 electic field 1 - 21 Electric Field 1 Covering all...

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