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OpenStudy (anonymous):
The current in a wire is doubled. why is mean time unchanged? and what happens to electron drift speed?
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OpenStudy (anonymous):
if \[I=ei _{e}=en _{e}Av_{d}=en _{e}A(e \tau/m)E \] i_e: eletric current n_e: number density A: cross section area v_d:drift speed tau: mean time b/w collision
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