COMEDK Exam 2019 Solved Paper

Given, area of rectangular coil, A=25‌cm×10‌cm
⇒‌‌A=250cm2=0.025m2
No. of turns in the coil, N=300
Magnetic field strength, B=4×10−2T
Peak voltage will be induced when the longer side of the coil moves perpendicular to the magnetic field.
ω=2πν=2π×50=100π
Induced emf is given by
ε‌=NBAω
‌=300×40×10−2×0.025×100π=3πV