Answer:
a) The diagram required:
![](https://www.learnatnoon.com/s/in//wp-content/uploads/sites/8/2021/09/image-1127.png)
b) Maxwell’s right hand rule is used to determine the magnetic field direction around a straight current-carrying wire. The thumb points in the direction of the current, while the fingers encircling the wire point in the direction of the magnetic field lines.