NEETPhysicsMagnetism and MatterMCQ+4 / −1
Electromagnets are made of soft iron because soft iron has
- Alow retentivity and high coercive force
- Bhigh retentivity and high coercive force
- Clow retentivity and low coercive force
- Dhigh retentivity and low coercive force
View written solutionFree
Correct answer: C
Electromagnet are made of soft iron because soft iron has low retentivity and low coercive force or low coercivity.
More from Magnetism and Matter
- A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a time period of 2 sec in earth's horizontal magnetic field of 24 microtesla. When a horizontal field of 18 microtesla is…2010 · MCQ
- If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is2009 · MCQ
- A bar magnet having a magnetic moment of 2 104 J T1 is free to rotate in a horizontal plane. A horizontal magnetic field B = 6 104 T exists in the space. The work done in taking the magnet slowly from a…2009 · MCQ
- Curie temperature above which2008 · MCQ
- Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show2007 · MCQ
- A charged particle (charge q) is moving in a circle of radius R with uniform speed v. The associated magnetic moment is given by2007 · MCQ
- Curie temperature above which2006 · MCQ
- A coil in the shape of an equilateral triangle of side is suspended between the pole pieces of a permanent magnet such that is in plane of the coil. If due to a current i in the triangle a torque acts on…2005 · MCQ