Question: 4. A large non-conducting disk with radius 5.0m is negatively charged. The charge is uniformly distributed across the surface of the disk. The electric field,

4. A large non-conducting disk with radius 5.0m is negatively charged. The charge is uniformly distributed across the surface of the disk. The electric field, on the axis of the disk, 1mm away from its surface is 10 N/C. Find the total charge on the disc? A) 6nc B) 9nC C) 14nC D) 22nC E) 23nC

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