A Huge (Essentially Infinite) Horizontal Nonconducting Sheet 10

question 7

Multiple Choice

A huge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. The upper face carries +95.0 nC/m² while the lower face carries -25.0 nC/ m². What is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10^-12 C²/N ∙ m²)

• A) 0.00 N/C
• B) 3.95 × 10³ N/C
• C) 6.78 × 10³ N/C
• D) 7.91 × 10³ N/C
• E) 1.36 × 10⁴ N/C

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