019 (part 1 of 4) 10.0 points Consider a disk of…


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20.50

019 (part 1 of 4) 10.0 points Consider a disk of radius 2.8 cm with a uni- formly distributed charge of +6.2 μC. Compute the magnitude of the electric field at a point on the axis and 3.8 mm from the center. The value of the Coulomb constant is 8.98755 × 109 N · m2/C2 . Answer in units of N/C. 020 (part 2 of 4) 10.0 points Compute the field from the near-field ap- proximation x ≪ R . Answer in units of N/C. 021 (part 3 of 4) 10.0 points Compute the electric field at a point on the axis and 34 cm from the center of the disk. Answer in units of N/C. 022 (part 4 of 4) 10.0 points Approximate the field by treating the disk as a +6.2 μC point charge at a distance of 34 cm. Answer in units of N/C.

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20.50