Question

The magnetic induction in the region between the pole faces of an electromagnet is 0.7 weber/m². The induced e.m.f. in a straight conductor 10 cm long, perpendicular to B and moving perpendicular both to magnetic induction and its own length with a velocity 2 m/sec is

• A. 0.08 V
• B. 0.14 V
• C. 0.35 V
• D. 0.07 V

Answer 1

Answer: (B)

0.14 V

Answer 2

$e = Bvl \Rightarrow e = 0.7 \times 2 \times (10 \times 10^{- 2}) = 0.14\mspace{6mu} V$