A uniform electric field exists in the region between two oppositely charged pla

Question

A uniform electric field exists in the region between two oppositely charged plane parallel plates that are separated by a distance of 60 cm. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 1.5 times 10-6s. Find the magnitude of the electric field between the plates. An electric dipole has opposite charges of 5 times 10-15 C separated by a distance of 0.4 mm. It is oriented at 60 degrees with respect to a uniform electric field of magnitude 2.0 times 10-3N/C. Find the energy of the dipole in keV.

Explanation / Answer

y = 0.5 a t^2

==> a = 2y/t^2 = 2*0.016/(1.5e-6*1.5e-6) = 14222222222 m/s2

F = m a = 1.67e-27 * 14222222222 = 0.00000000000000002375111111074 N

E = F/q = 0.00000000000000002375111111074/1.6e-19 = 148 N/C

b)

U = p.E = q L E cos60 = 5e-15*0.4e-3*2e3*0.5 = 2.0 * 10^-15 J

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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