JEE · NEET Previous Year Question
A bar magnet is demagnetized by inserting it inside a solenoid of length turns, and carrying a current of The coercivity of the bar magnet is:
Topic: JEE PYQ
Answer: B. Full step-by-step solution below.
- A
- B
- C
- D
Correct answer: B
Solution
(b) JEE Main 2019Coercivity, and
or
More Magnetism & Matter PYQs
- The magnetic susceptibility of a material of a rod is 499. Permeability in vacuum is . Absolute permeab…
- A paramagnetic sample shows a net magnetization of when placed in an external magnetic field of…
- A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It
- The Curie temperature represents
- A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. The energy requir…