e$)5$

A $100-g$ bar of length $10$ cm starts its motion from rest on a rail with $I=10A.$ If the applied uniform magnetic field $B=1000$ gauss, find bar speed $($in $\frac{m}{s})$ after traveling along the rail for $5$ s $.$

a$)1$

b$)2$

c$)3$

d$)4$

e$)5$