At time t = 0 magnetic field of 1000 G a u s s is passing perpendicularly through the area defined by the closed loop shown in the figure. If the magnetic field reduces linearly to 500 G a u s s , in

Question

At time t = 0 magnetic field of 1000 G a u s s is passing perpendicularly through the area defined by the closed loop shown in the figure. If the magnetic field reduces linearly to 500 G a u s s , in the next 5 s , then induced E M F in the loop is:

TestHub · Accepted Answer

ε = - d ϕ d t = - A d B d t ε = − Δ ϕ Δ t = A Δ B Δ t = 16 × 4 - 4 × 2 1000 - 500 5 × 10 - 4 × 10 - 4 = 56 × 500 5 × 10 - 8 = 56 × 10 - 6 V

Physics - EMI/AC Question with Solution | TestHub

Options:

Doubts & Discussion