### Problem Statement:A beam contains \(2.7 \times 10^9\) doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of \(4.9 \times 10^5\) m/s. ### Questions:1. **(a)** What is the magnitude of the current density \( \vec{J} \)?2. **(b)** What is the direction of the current density \( \vec{J} \)?3. **(c)** What additional quantity do you need to calculate the total current \( i \) in this ion beam?### Answers:- **(a)** Number: [Input field], Units: [A/m\(^2\)]- **(b)** Direction: [to the north] (Check box selected)- **(c)** Additional quantity: [cross-sectional area of ion beam] (Check box selected)### Note:Use the correct number of significant digits; the tolerance is +/-1 in the second significant digit.

(a) Given the beam is doubly charged. The magnitude of the current density be calculated as,…

Answered: A beam contains 2.7 x 109 doubly…

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