posted by Pat .
A coil with an area of 0.10 m2 is in a magnetic field of 0.20 T perpendicular to its area. It is flipped through 180° so that the part that was up is down. The flip takes 1.0 s. Estimate the average induced emf between the ends of the coil while it is being flipped.
ε = - ΔΦ/ Δt = -( Φ(max) –(- Φ(max))/ Δt=
=-2 Φ(max)/ Δt =- 2•B•A/ Δt =
= -2•0.2•0.1/1 = 0.04 V