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Chapter 22: Problem 35
Two points \(A\) and \(B\) lie \(15 \mathrm{cm}\) apart in a uniform electric field, with the path \(A B\) parallel to the field. If the potential difference \(\Delta V_{A B}\) is \(840 \mathrm{V},\) what's the field strength?
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The potential difference between the two sides of an ordinary electric outlet is \(120 \mathrm{V}\). How much energy does an electron gain when it moves from one side to the other?
Is the potential at the center of a hollow, uniformly charged spherical shell higher than, lower than, or the same as at the surface?
Why can a bird perch on a high-voltage power line without getting electrocuted?
What's the charge on an ion that gains \(1.6 \times 10^{-15} \mathrm{J}\) when it moves through a potential difference of \(2500 \mathrm{V} ?\)
A line charge extends along the \(x\) -axis from \(-L / 2\) to \(L / 2 .\) Its line charge density is \(\lambda=\lambda_{0}(x / L)^{2},\) where \(\lambda_{0}\) is a constant. Find an expression for the potential on the \(x\) -axis for \(x > L / 2 .\) Check that your expression reduces to an expected result for \(x \gg L\)
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