NEET 2018
- Exam
- NEET
- Year
- 2018
- Subject
- Physics
- Chapter
- Magnetic Properties of Matter
NEET 2018 · Physics · Magnetic Properties of Matter
A thin diamagnetic rod is placed vertically between the poles of an...
A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence, the rod gains gravitational potential energy. The work required to do this comes from
Options
- AThe lattice structure of the material of the rod
- BThe magnetic field
- CThe current source
- DThe induced electric field due to the changing magnetic field
Correct answer
C. The current source
Step-by-step solution
The work required to lift must be coming from the current source which is causing the current to blow through electromagnet.