please solve question 6 . pleae show all your work II. Lecture MC questions. 5.

Question

please solve question 6 . pleae show all your work

II. Lecture MC questions. 5. (5 pts) 3 point charges are fixed in place at the corners of Y1 = +1.011C Y2 = +2.011C 1.3 a rectangle, as shown. Which choice best represents the magnitude of electric force exerted on particle 3 (at lower left)? :040--> : A. 5.2 x 101 N 3.7 x 101 N C. 4.6 x 101 N 6.3 x 101 N E. None of these, (3 pts) Which choice best represents the value of electric potential at the position of particle 3 (at lower left)? Assume the usual reference point for electric potential. 6. A. 6.6 x 104 v 1.1 x 104 V C. -2.4 x 104 v D. -2.0 x 101 V E. None of these,

Explanation / Answer

Potential =kq/r

r2=(0.4^2+0.3^2)^1/2=0.5m

Total potential at the position of particle 3 = k q1/r1 +kq2/r2

=9×10^9×10^-6/0.3+9×10^9×2×10^-6/0.5=3×10^4+3.6×10^4

=6.6×10^4V

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