Magnetic Field in the center of a Helmhotz coil: B = 8 NI Magnetic Field in the

Question

Magnetic Field in the center of a Helmhotz coil: B = 8NI

Magnetic Field in the center of a Helmhotz coil: B = 8NI mu 0/(5Rsqrt(5)) Permeability Constant: mu 0 = 4 times 10-7 T·m/A Accepted Value for e/m: 1.759 times 1011 C/kg Formula for e/m given V, B, and r: e/m = 2V/(B2r2) If the percentage standard error in measuring voltages and currents is 2%, the percentage standard error in measuring the radius of the path is 3%, and the percentage standard error in determining the radius of the Helmholtz coil is 1%, what is the percentage standard error in finding e/m? 5% 6% 4.58% 8% 2.45% 2.236%

Explanation / Answer

option c

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