First slide
Magnetic flux and induced emf
Question

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

Moderate
Solution

Area of given loop = A= 16×4-212×4×2 = 56 cm2 Induced emf, ε=dϕdt=1000500×104×56×10-45  =56 μV

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App