1) A cylindrical magnet of diameter D and area A produces a nearly uniform magnetic field B across each end of the cylinder. When the magnet is dropped down a tightly fitting yet slippery nonconducting cylinder it induces a voltage V(t) across a compact coil of N turns wrapped around the cylinder, as shown in Figure 1. Based on the illustrated data, determine the approximate value of B. Briefly explain the process and indicate which pole is North (top or bottom). Before drop, coil flux linkage λ = 0. V(t) Magnet, B Nonconducting cylinder *V (t) to t 81 Figure 1
1) A cylindrical magnet of diameter D and area A produces a nearly uniform magnetic field B across each end of the cylinder. When the magnet is dropped down a tightly fitting yet slippery nonconducting cylinder it induces a voltage V(t) across a compact coil of N turns wrapped around the cylinder, as shown in Figure 1. Based on the illustrated data, determine the approximate value of B. Briefly explain the process and indicate which pole is North (top or bottom). Before drop, coil flux linkage λ = 0. V(t) Magnet, B Nonconducting cylinder *V (t) to t 81 Figure 1
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A cylindrical magnet of diameter D and area A produces a nearly uniform
magnetic field B across each end of the cylinder. When the magnet is dropped
down a tightly fitting yet slippery nonconducting cylinder it induces a voltage
V(t) across a compact coil of N turns wrapped around the cylinder, as shown in
Figure 1. Based on the illustrated data, determine the approximate value of B.
Briefly explain the process and indicate which pole is North (top or bottom).
Before drop, coil flux linkage λ = 0.
V(t)
Magnet, B
Nonconducting
cylinder
*V (t)
to
t
81
Figure 1
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