Explanation 1) Concept: By using the concept of de Broglie wavelength and its formula, we can find the wavelength. 2) Formulas i) Wavelength, λ = h p where p is momentum and h is Planck’s constant. ii) p = 2 m K 3) Given: i) Potential difference is, V = 25.0 k V ii) Mass of electron, m e = 9.0109 × 10 - 31 k g iii) Charge of electron, e = 1.602 × 10 - 19 C 4) Calculation: The wavelength is given by λ = h p λ = h m e v = h 2 m e K λ = h 2 m e e V Now we have to plug the values: λ = 6

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Chapter 38, Problem 47P

To determine

To find:

De Broglie wavelength of electron.

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Chapter 38, Problem 46P

Chapter 38, Problem 48P

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A capacitor with a capacitance of C = 5.95×10−5 F is charged by connecting it to a 12.5 −V battery. The capacitor is then disconnected from the battery and connected across an inductor with an inductance of L = 1.55 H . At the time 2.35×10−2 s after the connection to the inductor is made, what is the current in the inductor? At that time, how much electrical energy is stored in the inductor?

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Chapter 38 Solutions

Fundamentals of Physics Extended 10E WileyPlus 5 Student Package

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