Question Detail
Question
Magnetic flux through a loop increases as Φ_B = 6.0t² + 7.0t (mWb). Magnitude of induced emf at t = 2.0s is?
Correct Answer
Option B is the correct answer.
Detailed Explanation
ε = |dΦ/dt| = |12t + 7| at t=2s: ε = |24 + 7| = 31 mV.
Hint
Induced emf = -dΦ/dt.