An Incredible Amount of Electrical Energy Passes Down the Funnel

An incredible amount of electrical energy passes down the funnel of a large tornado every second.Measurements at a distance of 12.8 km from a large tornado showed an almost constant magnetic field of 2.35 × 10−⁸ T associated with the tornado.What was the average current going down the funnel? (µ₀ = 4π × 10−⁷ T⋅m/A)

A) 3.0E+3 A
B) 1.5E+3 A
C) 7.5E+2 A
D) 9.6E+2 A
E) 4.7E+3 A

Correct Answer:

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