A conducting square loop of side L and resistance R moves in its plane with a uniform velocity u perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane at the loop exists everywhere with half the  loop outside the field, as shown in Fig. The induced emf is :

• A

  zero

• B

  RvB

• C

  $\frac{\mathrm{vBL}}{\mathrm{R}}$

• D

  vBL