Physics · Electrodynamics
An infinitely long straight wire with uniform line charge density λ per unit length carries a current I. Take the permittivity and permeability of the medium to be ε0 = μ0 = 1 in appropriate units. A particle of charge q is at a distance r and is travelling along a trajectory parallel to the wire. If the net force on the particle is zero, what is the speed of the charge?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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Correct answer
λI
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