1.14.1 - Field due to an infinitely long straight uniformly charged wire
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Practice Questions
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What is the direction of the electric field around a positively charged wire?
💡 Hint: Consider the effect a positive test charge would have.
If the linear charge density of a wire is doubled, what happens to the electric field strength at a given distance?
💡 Hint: Look at the formula for electric field around a wire.
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Interactive Quizzes
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What does Gauss's Law relate to?
💡 Hint: Think about the relationship between electric field and charge.
True or False: The electric field inside a charged spherical shell is non-zero.
💡 Hint: Consider Gauss's law in relation to the shell.
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Challenge Problems
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Two infinite wires are placed parallel to each other, one positively charged and one negatively charged with the same linear charge density. Calculate the electric field at a point midway between them.
💡 Hint: Consider the contributions from both the positive and negative charges.
Derive the electric field for a cylindrical wire with varying linear charge density and explain how that calculation differs from uniform charge density.
💡 Hint: Think about how you would set up your Gaussian surface for this case.
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