iPad 2018 hissing

Hello Apple

I hope you can help me as I am getting worried about my brand new iPad 2018 9.7 inch. The iPad is making very weird hissing noise and it also sound like static electric sounds. I have done some reseach and I thing it’s coming from the back of the iPad and not the speakers. Should I bring my iPad back or dose all your new iPads make this noise. Thanks so much

Your sincerely Niall