Answer:
The magnetic field required is
Explanation:
From the question we are told that there was a change in electric field with respect to time , this change can be mathematically represented as
from the question
Now substituting this into the equation
Maxwell state mathematically that
=>
Where is the length which is mathematically represented as
And S is the the surface area which is mathematically represented as
And
i.e and the value of the speed of light is
Now substituting these into the equation
From the question we are told that the diameter
The radius would be
Substituting in to the formula for B