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				| 1. | As shown in the figure a metal rod makes contact and complete the circuit. The circuit is perpendicular to the magnetic field with \[B=0.15\,tesla.\] If the resistance is \[3\,\Omega \], force needed to move the rod as indicated with a constant speed of \[2m/sec\] is [MP PET 1994] | 
| A. | \[3.75\times {{10}^{-3}}\]N | 
| B. | \[3.75\times {{10}^{-2}}\,N\] | 
| C. | Nature of the material | 
| D. | \[3.75\times {{10}^{-4}}N\] | 
| Answer» B. \[3.75\times {{10}^{-2}}\,N\] | |