The Electric Field Strength in the Space Between Two Closely

question 26

Multiple Choice

The electric field strength in the space between two closely spaced parallel disks is 1.0 × 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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