AAI ATC Junior Executive 21 Feb 2023 Shift 2 Paper
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Question : 86 of 120
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An electron beam with cross-section area 1.0 mm2 has 6 × 1016 electrons (q = 1.6 × 10-19 C) passing per second perpendicular to any section. The current density (ampere per metre2) in the beam is:
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