A constant electric current $I$ is passed through a straight conductor of length $l$. If $S$ in specific charge of electron then the total momentum of electrons is
A$\frac{{IS}}{l}$
B$\frac{{Il}}{S}$
C$\frac{{Sl}}{I}$
D$\frac{{2Il}}{S}$
Medium
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B$\frac{{Il}}{S}$
b Total momentum of electrons $=$ total no. electron
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