A Cubical Surface with No Charge Enclosed and with Sides $\phi$

question 13

Multiple Choice

A cubical surface with no charge enclosed and with sides 2.0 m long is oriented with right and left faces perpendicular to a uniform electric field E of (1.6 * 10⁵ N/C) . The net electric flux $\phi$ _E through this surface is approximately

• A) zero
• B) 6.4 *10⁵ N · m²/C
• C) 13* 10⁵ N · m²/C
• D) 25 * 10⁵ N · m²/C
• E) 38 *10⁵ N · m²/C

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