Principles of Physics 11th ISV Edition · Capacitance · Problem 7
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Walker, Halliday & Resnick — Capacitance: Problem 7
7 A parallel-plate capacitor has plates of area $0.080 \text{ m}^2$ and a separation of $1.2 \text{ cm}$. A battery charges the plates to a potential difference of $120 \text{ V}$ and is then disconnected. A dielectric slab of thickness $4.0 \text{ mm}$ and dielectric constant $4.8$ is then placed symmetrically between the plates. (a) What is the capacitance before the slab is inserted? (b) What is the capacitance with the slab in place? What is the free charge $q$ (c) before and (d) after the slab is inserted? What is the magnitude of the electric field (e) in the space between the plates and dielectric and (f) in the dielectric itself? (g) With the slab in place, what is the potential difference across the plates? (h) How much external work is involved in inserting the slab?
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주어진 조건: 7 A, . A
구하는 것: (a) What is the capacitance before the slab is inserted?; (b) What is the capacitance with the slab in place? What is the; (c) before and
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Principles of Physics · 11th ISV Edition
저자: Walker, Halliday & Resnick
출판사: Wiley
단원: Capacitance