When current flows through a conductor, then the order of drift velocity of electrons will be
A${10^{10}}\,m/\sec $
B${10^{ - 2}}\,cm/\sec $
C${10^4}\,cm/\sec $
D${10^{ - 1}}\,cm/\sec $
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B${10^{ - 2}}\,cm/\sec $
b (b) Order of drift velocity $ = {10^{ - 4}}\,m/sec = {10^{ - 2}}\,cm/sec$
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