Uniformly charged insulating rods of length 14.0 cm (blue) and 7.0 cm (red) are

Question

Uniformly
charged insulating rods of length 14.0 cm (blue) and 7.0 cm (red) are bent into the shape of a
semicircle as shown in Fig. 3. Longer rod has a total charge of 7 mC and shorter rod has a total
charge of -7 mC. Find the electric potential at O, the
center of both semicircles.

Problem 3. (4 points) Electric potential due to a uniformly charged semicircle ring. Uniformly charged insulating rods of length 14.0 cm (blue) and 7.0 cm (red) are bent into the shape of a semicircle as shown in Fig. 3. Longer rod has a total charge of 7 uC and shorter rod has a total charge of-7 pC Find the electric potential at O, the center of both semicircles (A)-1.41 MV (B) -1.51 MV (C) -2.82 MV (D) -3.02 MV the electric potential at o, the Figure 3. Two charged semicircle rings.

Explanation / Answer

Electric potential = summation kq/r

= 9e9*-7e-6/(0.07/pi) + 9e9*7e-6/(0.14/pi)

= - 1.41*10^6 V

= - 1.41 MV

Option A is correct

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

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