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What Is the Magnitude of an Electric Field That Balances

Question 19

Multiple Choice

What is the magnitude of an electric field that balances the weight of a plastic sphere of mass 6.4 g that has been charged to -3.0 nC?

A) 2.1 × 10⁷ N/C
B) 2.4 × 10⁶ N/C
C) 4.5 × 10⁶ N/C
D) 6.4 × 10⁶ N/C

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