A beam contains 2 108 doubly charged positive ions per cubic centimeter all of which are moving with a speed of 10 m s The

Question

A beam contains 2 108 doubly charged positive ions per cubic centimeter all of which are moving with a speed of 10 m s The current density is 6 4 A m 9 2 3 2 A m 3 1 6 A m 4 None of these 252 AAA B 24

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