1. Tardigrade
  2. Question
  3. Physics
  4. The magnetic flux through a surface varies with time as follows: φ=12t2+7t+3 Here φ is in milliweber and t is in seconds. The induced emf at t = 5s ?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The magnetic flux through a surface varies with time as follows :
$\phi=12t^2+7t+3$
Here $\phi$ is in milliweber and t is in seconds. The induced emf at t = 5s ?

Electromagnetic Induction

Solution:

$E = - \frac{d \phi}{dt} = 24 t + 7$ At $t = 5s$ , $E = 24 \times 5 + 7 = 127 \, mV$