The speed of electron in a circular orbit of `0.5 Å`, around the proton in a hydrogen atom is `2xx10^6` m/s.
Calculate the equivalent currrent assuming motion of electron as one current loop.

Explanation

To solve the problem, we need to calculate the equivalent current produced by an electron moving in a circular orbit around a proton in a hydrogen atom. Here are the steps to find the solution:

### Step 1: Convert the radius from angstroms to meters
The radius of the orbit is given as \(0.5 \, \text{Å}\). We need to convert this to meters.

\[ 0.5 \, \text{Å} = 0.5 \times 10^{-10} \, \text{m} = 5.0 \times 10^{-11} \, \text{m} \]
...