Electricity and magnetism Undergraduate

4 tough physics 2 electricity and magnetism questions

I will be having a timed assignment on the following date. Theyre are four tough questions in physics. I dont mind if theyre not 100% perfectly solved but most importantly submitted on time. You will have around 1hour and 30 mintues to slove them. Can offer more price if i like your work but we need to chat first.
Thank you