JEE Main 2004Annual, Paper 1PhysicsEasyMagnetic Effects of Current and Magnetism165× since 2002The materials suitable for making electromagnets should haveAOption A. high retentivity and low coercivityBOption B. low retentivity and low coercivityCOption C. high retentivity and high coercivityDOption D. low retentivity and high coercivityCheckSkip · show solution
