Introduction to Electrodynamics
4th Edition
ISBN: 9781108420419
Author: David J. Griffiths
Publisher: Cambridge University Press
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Chapter 4.1, Problem 4.1P
A hydrogen atom (with the Bohr radius of half an angstrom) is situatedbetween two metal plates 1 mm apart, which are connected to opposite terminals ofa 500 V battery. What fraction of the atomic radius does the separation distance damount to, roughly? Estimate the voltage you would need with this apparatus toionize the atom. [Use the value of
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To obtain the value of an unknown electrical charge, a group performed an experiment. From the graph of the electric potential (voltage) V in volts, as a function of the inverse distance (1/r) in m^-1, the group obtained an angular coefficient 6838 Nm^2/C by the linear equation of the best straight line. Knowing that V=(kq)/r, calculate the value of the electric charge, in nC (nanocoulomb), from the slope provided by the best line.
Round the answer to a whole number.
Use:
k = 8.9876 x 10^9 N⋅m^2⋅C^−2
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What is the magntiude of the integral of B over dl for part c? Enter in your answer in micro-T*m. Assume that all currents are 14.7 A instead of what the textbook has noted.
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