College Physics
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Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Two thin plates (0.50 m x 0.50 m x 'very thin') of a parallel capacitor are located parallel to the xzplane. One of the large plates crosses the y-axis at y = 0 cm, and the other crosses at y = -1 cm. The charge on the positive plate is +30 nC, and on the negative plate, -30 nC.
a) What is the voltage from the positive plate to the negative plate?
b) What is the electric potential difference from the negative plate to a point in the middle of the space between the plates?
c) If the electric potential at the negative plate is 100 V, what is the electric potential at the positive plate? (
d-f) The negative plate is now shifted 0.5 cm away from the positive plate. d) What is the voltage from the positive to the negative plate? (
e-f) If an electron is released from rest from very close to the negative plate, and it flies to the positive plate,
e) what is the electron's change in potential energy?
f) what is the electron's speed when it hits the positive plate?
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- Two parallel plates have equal and opposite charges. When the space between the plates is evacuated, the electric field is E= 3.30×105 V/m. When the space is filled with dielectric, the electric field is E= 2.50×105 V/m. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Energy density, both before and after the. What is the charge density on each surface of the dielectric? Express your answer in coulombs per meter squared. να ΑΣΦ ? |X| X•10" |oi| = C/m²arrow_forwardT or F? a. For a parallel plate capacitor, the capacitance depends on the area of the plates and on the separation distance between the plates, it does not depend on the material the plates are made of. b. If a conductor is placed in an electric field, and is in electrostatic equilibrium, the electric field lines just inside the conductor will be parallel to its surface.arrow_forwardPart G Calculate the charge on capacitor C4. Express your answer in coulombs. ΑΣΦ ? Q4 = C %Darrow_forward
- Charge q is fired through a small hole in the positive plate of a capacitor, as shown.a. If q is a positive charge, does it speed up or slow down inside the capacitor? Answer this question twice: (i) Using the concept of force. (ii) Using the concept of energy.b. Repeat part a if q is a negative charge.arrow_forwardPart A The voltage across a 4 μF capacitor increases by 48 V. If the final charge on the capacitor is 507 μC, determine the initial charge. Q₁ = Part B Two parallel plates each have a charge magnitude of 601 nC. Between the plates is a dielectric with K = 86. Additionally, the E-field between the plates is 7.81x105 V/m. Determine the area of each plate. A= Part C A capacitor with no dielectric has an E-field of 88 kV/mm between the plates. The area of each plate is 46.3 cm² and the voltage across the capacitor is 1.5 V. Determine the capacitance. C=arrow_forwardAn air-filled parallel-plate capacitor has plates of area 2.50 cm^2 separated by 1.80 mm. The capacitor is connected to a(n) 13.0 V battery. a) Find the value of its capacitance. pF b) What is the charge on the capacitor? pC c) What is the magnitude of the uniform electric field between the plates? N/Carrow_forward
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