The Electric Field at a Point $2.8 \mathrm {~cm}$ From a Small Object Points Toward the Object with a a Small

question 39

Multiple Choice

The electric field at a point $2.8 \mathrm {~cm}$ from a small object points toward the object with a strength of $180,000 \mathrm {~N} / \mathrm { C }$ . What is the object's charge $\mathrm { q }$ ? $\left( k = 1 / 4 \pi \varepsilon _ { 0 } = 8.99 \times 10 ^ { 9 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { C } ^ { 2 } \right)$

• A) \(+ 17 \mathrm { nC }\)
• B) \(+ 16 \mathrm { nC }\)
• C) \(- 16 \mathrm { nC }\)
• D) \(- 17 \mathrm { nC }\)

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