For questions 16, 17) Two point charges are held at the corners of a rectangle a

Question

For questions 16, 17) Two point charges are held at the corners of a rectangle as shown in the gure. The lengths of sides of the rectangle are 0.050 m and 0.150 m. Assume that the electric potential is defined to be zero at infinity. B +2.0 IC 16. What is the potential difference, VE-VA, between corners A and B? A) -8.4 x 10% v B) -7.8 x 10 v C) -7.2 x 10s v D) -6.0 x 105 v E) zero volts 17. What is the electric potential energy of a +3.0 uC charge placed at corner A? A) 0.10 J B) 0.18 J C) 2.3J D) 3.6J E) zero joules (For questions 18, 19) Two charges of opposite sign and equal magnitude O-0.82 C are hel 2.0 m apart as shown in the figure. +0 10 m 4.0 m 1.0 m 4.0 m -0 18. Determine the electric potential at the point P. A) 1.1 x 109 v

Explanation / Answer

Q16.
V = kQ/r

V(A) = [9.0 * 10^9 * -5.0 * 10^(-6) / 0.150] + [9.0 * 10^9 * 2.0 * 10^(-6) / 0.050] = 60000 V

V(B) = [9.0 * 10^9 * -5.0 * 10^(-6) / 0.050] + [9.0 * 10^9 * 2.0 * 10^(-6) / 0.150] = -780000 V

so V(B) - V(A) = -780000 - 60000 = -840000
= -8.4 * 10^5 V

So, option A : -8.4 * 10^5 V

Q17.
U(A) = qV(A)
= 3*10^-6*60000
= 0.18 J

So, option B : 0.18 J

Pls post one question at a time.

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.