le Choice the choice that best completes the statement or answers the question.

Question

le Choice the choice that best completes the statement or answers the question. A metallic object holds a charge of 4.8 x 10cThe object contains 16 x 104 protons. What is the total a 3,0 or electrons? ( 1.6 x 10 C is the magnitude ofthe electron/proton charge. a. 3.0×10 b. 6.1×1013 c. 2.4 x 1013 d. 4.6 x 10 2. A charge of +2 C is at the origin. When charge O is placed at 2 m along the positive x axis, the electric field at 2 m along the negative x axis becomes zero. What is the value of 0? 2m 2m c. 7 C 3. A charge of +4.0 C is located on the x axis at x 0.80 m and another charge of 6.0 C s located on the y axis at y- 1.0 m. The magnitude of the electric field at the origin is: a. 6.3×104 N/C b. 7.8×104 N/C C. 4.7 × 105 N/C d. 6.6×105 N/C e. None of the above

Explanation / Answer

1)number of electrons= charge on the body/ charge of a single electron

= -4.8X {10^(-6)}/ -1.6X{10^(-19)}

= 3.0 X 10^14

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