Physics

Problem

47. A positive charge of

3.0 \times 10^{-8}

coulomb is placed in an upward directed uniform electric field of

4.0 \times 10^{4} \mathrm{~N} / \mathrm{C}

. When the charge is moved 0.5 meter upward, the work done by the electric force on the charge is (A)

6 \times 10^{-4} \mathrm{~J}

(B)

12 \times 10^{-4} \mathrm{~J}

(C)

2 \times 10^{4} \mathrm{~J}

(D)

8 \times 10^{4} \mathrm{~J}

(E)

12 \times 10^{4} \mathrm{~J}

(A)

6 \times 10^{-4} \mathrm{~J}

(B)

12 \times 10^{-4} \mathrm{~J}

(C)

2 \times 10^{4} \mathrm{~J}

(D)

8 \times 10^{4} \mathrm{~J}

(E)

12 \times 10^{4} \mathrm{~J}