ch22_p60 - 60. First, we need a formula for the field due...

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60. First, we need a formula for the field due to the arc. We use the notation λ for the charge density, λ = Q /L . Sample Problem 22-4 illustrates the simplest approach to circular arc field problems. Following the steps leading to Eq. 22-21, we see that the general result (for arcs that subtend angle θ ) is E arc = λ 4 πε o r [sin( θ/2) − sin( −θ/2) ] = λ sin (θ/2) 2 πε o r . Now, the arc length is L = r θ if θ is expressed in radians .
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This note was uploaded on 01/25/2011 for the course PHYSICS 17029 taught by Professor Rebello,nobels during the Fall '10 term at Kansas State University.

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