What is the electric field at the midpoint between the disks

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Two 10-cm charged disks face each other, 20 cm apart. The left disk is charged to -30 nC and the right disk is charged to +30 nC. What is the electric field (both magnitude and direction) at the midpoint between the disks? What would be the force (again, magnitude and direction) on a -1 nC test charge placed at the midpoint?

Reference no: EM13541383

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