A 12-M Radius Cylindrical Region Contains a Uniform Electric Field Along

question 69

Multiple Choice

A 1.2-m radius cylindrical region contains a uniform electric field along the cylinder axis.It is increasing uniformly with time.To obtain a total displacement current of 2.0*10 ^{- 9} A through a cross section of the region, the magnitude of the electric field should change at a rate of:

• A)5.0 V/m·s
• B)12 V/m·s
• C)37 V/m·s
• D)50 V/m·s
• E)4.0 * 10⁷ V/m·s

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