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Compare the energy required to set up, in a cube 10 cm on edge. (a) A uniform electric field of 100 kV/m ? (b) A

Compare the energy required to set up, in a cube 10 cm on edge.

(a) A uniform electric field of 100 kV/m ?

(b) A uniform magnetic field of 1.0 T?

(c) What is the energy stored per unit length for a = 1.2mm , b = 3.5 mm, and I = 2.7 A for a long coaxial cable that consists of two concentric cylinders with radii a and b?

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