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Q. In an atom electron revolve around the nucleus along a path of radius $0.72\, \AA$ making $9.4 \times 10^{18}$ revolutions per second. The equivalent current is [Given $e =1.6 \times 10^{-19} C$ ]

KCETKCET 2022Current Electricity

Solution:

$i =\frac{ e }{ T }= ef$