110406 - Physics 122 4/6/11 4/6/11 Physics 122 1 4/6/11...

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Unformatted text preview: Physics 122 4/6/11 4/6/11 Physics 122 1 4/6/11 Physics 122 2 Physics 122 3 7.1 7.2 7.3 7.4 6% a 3% 7% 7% b 43% c 5% 27% 18% d 4% e 68% f 8% 24% 72% 1% 10% 6% 63% 3% 1% 1% 2% 67% 0% be 4/6/11 Prof. E. F. Redish 0% 4% 1 Physics 122 4/6/11 Fq = FQ1 → q + FQ2 → q + FQ3 → q + FQ4 → q + ... Fq = kC qQ1 k qQ k qQ k qQ r1 + C 2 2 r2 + C 2 3 r3 + C 2 4 r4 + ... 2 r1 r2 r3 r4 where r1 = distance from Q1 to q r2 = distance from Q2 to q ... 4/6/11 7 Physics 122 Fq = Fq = r1 = direction from Q1 to q (mag. 1, no units!) r2 = direction from Q2 to q (mag. 1, no units!) kC qQ1 r1 r12 Eq = kC qQ1 k qQ k qQ r1 + C 2 2 r2 + C 2 3 r3 + ... r12 r2 r3 Fq q Eq = = Fq q = kC Q1 r1 r12 kC Q1 kQ kQ r1 + C 2 2 r2 + C 2 3 r3 + ... r12 r2 r3 4/6/11 Physics 122 8 4/6/11 Physics 122 9 Prof. E. F. Redish 2 Physics 122 4/6/11 4/6/11 10 Physics 122 ⎡Q ⎤ [λ ] = ⎢ ⎥ ⎣L⎦ ⎡Q ⎤ [E] = k ⎢ 2 ⎥ ⎣L ⎦ 4/6/11 ⎡Q ⎤ [σ ] = ⎢ 2 ⎥ ⎣L ⎦ ⎡λ ⎤ [E] = k ⎢ ⎥ ⎣L⎦ [ E ] = k [σ ] 11 Physics 122 E= kC Q r2 E= 2 kC λ d E = 2π kC σ 4/6/11 Prof. E. F. Redish Physics 122 12 3 Physics 122 4/6/11 4/6/11 Physics 122 13 4/6/11 Physics 122 15 The fields of the two plates cancel each other on the outside. The fields of the two plates cancel each other on the outside. The fields of the two plates add on the inside, producing double the field of a single plate. 4/6/11 Prof. E. F. Redish Physics 122 16 4 ...
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This note was uploaded on 12/28/2011 for the course PHYSICS 122 taught by Professor Bhagat during the Fall '11 term at Maryland.

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110406 - Physics 122 4/6/11 4/6/11 Physics 122 1 4/6/11...

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