A cylindrical capacitor is made of two concentric cylinders. The inner cylinder has radius r1 = 4 mm, and the outer one a radius r2 = 8 mm. The common length of the cylinders is L = 150 m
What is the potential energy stored in this capacitor when a potential difference V = 4 V is applied between the inner and outer cylinder? A)
9.6 × 10-8 J
B)
1.3 × 10-8 J
C)
6.3 × 10-8 J
D)
0.34 × 10-8 J
E)
4.6 × 10-8 J
A
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