In a hydrogen atom, an electron moves in an orbit of radius $5.0 x 10^{-11}$ m with a speed of $2.2 x 10^{6}$ m/s. What is the equivalent current ? (Electronic charge = $1.6 x 10^{-19}$ C)

In a hydrogen atom, an electron moves in an orbit of radius $5.0 x 10^{-11}$ m with a speed of $2.2 x 10^{6}$ m/s. What is the equivalent current ? (Electronic charge = $1.6 x 10^{-19}$ C)
1). 0.112 mA
2). 112 mA
3). 11.2 mA
4). 1.12 mA

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