What is the magnetic field strength at a point 2.5 mm radially from the center of the wire leading to the capacitor

Complete Question

A 8.0 A current is charging a 1.0 -cm-diameter parallel-plate capacitor. What is the magnetic field strength at a point 2.5 mm radially from the center of the wire leading to the capacitor?

The magnetic field is  

Explanation:

From the question we are told that

    The current is  

    The diameter is  

      The position considered is  

 Generally the magnetic field is mathematically represented as

Here is permeability of free space with value  

      So

=>              

=>              

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer