5. In Investigation 2, if everything stays the same, except the diameter of the outer ring is doubled, how does the electric field change?

Complete Question

The complete question is shown on the first and second uploaded image

There is a change in the electric field by this factor

Explanation:

From the question we are told that

  The electric field is  

    Now when the outer diameter is doubled, the radius(b) is also doubled

So

Now

=>  

=>  

Here we see that the electric field changes by the factor

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