
Answer & explanation
Correct answer: option 2
$\text{There is a voltage difference across ends of the rod }\xi = Blv$
$ \text{Due to this voltage difference there is an electric field inside the rod}$

Correct answer: option 2
$\text{There is a voltage difference across ends of the rod }\xi = Blv$
$ \text{Due to this voltage difference there is an electric field inside the rod}$