An electron (charge = 1.6 × 10' 19 Coulomb) is moving in a circle of radius 5.1×10' 11 mat a frequency of 6.8×1015 revolutionss'1. The equivalent current is approximately

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An electron (charge = 1.6 × 10' 19 Coulomb) is moving in a circle of radius 5.1×10' 11 mat a frequency of 6.8×1015 revolutionss'1. The equivalent current is approximately