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Two very long coaxial conducting cylindrical shells have a potential difference = +800 V. The inner cylinder has radius of 5.0 cm and the outer shell has radius of 20 cm. What is the electric field vector between the shells at r=10 cm? (cm=m)

A) 5.3 V/m pointing out along radius

B) 1.8 V/m pointing in along radius

C) 7.4 V/m pointing out along radius

D) 5.8 V/m pointing in along radius

E) 9.9 V/m pointing out along radius

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