A rod AB is moved with a speed of 1 m/s in magnetic field of strength B = 1 T as shown in the figure. If the length of rod is 2 cm, the emf produced is
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 0.02 V
The emf induced in the rod is -
$ε=Blv$
where,
B = Magnetic field = 1 T
$l$ = length of the rod = 2 cm = 0.02 m
v = velocity = 1 m/s
$∴ε=1×0.02×1$
$=0.02V$