The difference between an electromagnet and a bar magnet is that the bar (steel) magnet is always turned on, therefore always magnetic. DIFFERENCE: a bar magnet is a permanent magnet where as solenoid is a electromagnet so it acts as a magnet only when electricity is passed through it.Can anyone tell me the difference between debug & release.Used in sharepoint 2010. Stack Exchange Network Stack Exchange network consists of 177 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. similarity between bar magnet and solenoid 1.Both have a attractive and directive properties. 2.The magnetic field lines are exactly identical to those due to a cylindrical bar magnet with one end of the solenoid acting as a south-pole and its other end as a north -pole.thus, a current-carrying solenoid behave like a bar magnet with fixed ...