The Electric Field Strength in the Space Between Two Closely

question 30

Multiple Choice

The electric field strength in the space between two closely spaced parallel disks is .0 × 10⁵ N/C.This field is the result of transferring 3.9 × 10⁹ electrons from one disk to the other.What is the diameter of the disks? (e = 1.60 × 10^-19 C,ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A)3.0 cm
• B)1.5 cm
• C)4.5 cm
• D)6.0 cm

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