What resoultion of my webcam do i need in order to recieve quality video and audio call?

Well it depends , Generally we keep it on 1080p but if you think the net speed is not that good 720p will get the job done. And you Know what I have personally usend it on 480p as well , and it worked perfectly fine.

5mp camera/720px depends on your reuirement

Depends on what are you using for your Webex meeting. We use our Cisco video system i.e. Cisco Roomkits and it comes with HD. if you are using your laptop or PC then keep it at the default resolution and that should work.

Usually, an integrated webcam will perform well with 720p HD. you can try external cameras as well. I tried using a DLSR however I found that some other people with slower internet speeds were having some issues. so my recommendation will be 720p

720p HD