Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Anshum Sharma
Important topics of EMT are : Vector analysis(must important topic every year question), Electrostats, Ampere circuital and Biot Savart's law, Maxwell's equation, Poynting vector and em Waves in media and polarization of light(very important).