Question

According to Faraday's law of electromagnetic induction, an emf is induced across ends of conducting rod whenever rod

• A. cut electric field lines
• B. moves parallel to field lines
• C. cuts magnetic field lines
• D. none of these

Answer 1

The correct option is C cuts magnetic field lines

$dϵ=(\overrightarrow{V}\times \overrightarrow{B}).\overrightarrow{l}$

where, $dϵ$ = emf induced
$V$ = velocity
$B$ = magnetic field
$l$ = length of the rod