A boat is moving due east in a region where the Earth's magnetic field is $5.0×10^{-5} NA^{-1}m^{-1}$ due north and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boats is $1.5 ms^{-1}$, the magnitude of the induced emf is:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 0.15 mV
The induced emf is,
$ε=B×v×L$
$=(5×10^{-5})(1.5)×(2)$
$=1.5×10^{-4}V$