If a conductor of 3 m in length is moving perpendicularly to magnetic field of ${10}^{-3}$ tesla with the speed of 10² m/s, then the e.m.f. produced across the ends of conductor will be

• A

  0.03 volt

• B

  0.3 volt

• C

  $3\times {10}^{-3}\text{ volt }$

• D

  3 volt