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(In a single straight wire) If the positive charges (density p+) are at rest, and the negative charges (density p-) move at speed v, show that:

p- = -(p+)*(gamma)^2

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- Thread starter johanjones190
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- #1

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(In a single straight wire) If the positive charges (density p+) are at rest, and the negative charges (density p-) move at speed v, show that:

p- = -(p+)*(gamma)^2

- #2

Astronuc

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The traveling charges (enclosed current) induces a magnetic field which in turn imposes a force on moving charges, which then must be offset by an electrostatic attraction.

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Yeah gamma = 1/ sqrt(1-v^2/c^2) where v is velocity and c is the speed of light!

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Astronuc

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for get this approach and go with what Marco_84 suggested. I was thinking something entirely different, not realizing that this was about SR.The traveling charges (enclosed current) induces a magnetic field which in turn imposes a force on moving charges, which then must be offset by an electrostatic attraction.

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