1. Tardigrade
  2. Question
  3. Physics
  4. A magnetic field of flux density 1.0 Wb m -2 acts normal to a 80 turn coil of 0.01 m 2 area. If this coil is removed from the field in 0.2 second, the emf induced in it is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A magnetic field of flux density $1.0 \,Wb \,m ^{-2}$ acts normal to a $80$ turn coil of $0.01\, m ^{2}$ area. If this coil is removed from the field in $0.2$ second, the emf induced in it is

KCETKCET 2022Electromagnetic Induction

Solution:

$\phi_{1}= BAN =1 \times 0.01 \times 80$
$\phi_{1}=0.8\, wb$
$\phi_{2}=0$
$e =-\frac{\left(\phi_{2}-\phi_{1}\right)}{ t }$
$=-\left(\frac{0-0.8}{2}\right)=4\, V$