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An electromagnet problem with Teslas. Please help me figure it out?
In 1979, a potential difference of about 32 MV was measured in a lab in Tenn. The maximum magnetic fields, obtained for very brief periods of time, had magnetudes around 1000 T. Suppose a coil with exactly 50 turns of wire and a cross sectional area of .004 meters squared is placed perpendicular to one of these magnetic fields, which quickly drops to zero. If the induced emf is 32 MV, in how much time does the magnetic field strength decrease from 1000 to 0 T?
1 Answer
- Bert KLv 71 decade agoFavorite Answer
V = n d(BA)/d(t)
dt = n d(BA)/V = 50 (.004)(1000)/(32 10^6) = 0.2/32 * 10^(-3) = 6.25 micro seconds
best check the math
Source(s): http://hyperphysics.phy-astr.gsu.edu/hbase/electri... http://hyperphysics.phy-astr.gsu.edu/hbase/magneti...
