A) \[3.75\times {{10}^{-3}}N\]
B) \[2.75\times {{10}^{-3}}N\]
C) \[6.57\times {{10}^{-4}}N\]
D) \[4.36\times {{10}^{-4}}N\]
Correct Answer: A
Solution :
Given, \[B=0.15\,T,\,l=50\times {{10}^{-2}}cm\] and v = 2 m/s emf \[=Bvl\] \[e=0.15\times 2\times 50\times {{10}^{-2}}\] Current, \[i=\frac{e}{R}\] \[=\frac{0.15}{3}=5\times {{10}^{-2}}\] Force \[F=Bil\] \[=0.15\times 5\times {{10}^{-2}}\times 50\times {{10}^{-2}}\] \[=37.5\times {{10}^{-4}}\] \[=3.75\times {{10}^{-3}}N\]You need to login to perform this action.
You will be redirected in
3 sec