‹ PrevQuestion 71 / 71 · latest first
Physics · 2015
JEE Main · 10 April 2015, Shift 1 · Q20
A 25 cm long solenoid has radius 2 cm and 500 total number of turns. It carries a current of 15 A. If it is equivalent to a magnet of the same size…
A $\displaystyle 25$ cm long solenoid has radius $\displaystyle 2$ cm and $\displaystyle 500$ total number of turns. It carries a current of $\displaystyle 15$ A. If it is equivalent to a magnet of the same size and magnetization
$\displaystyle \overrightarrow{\mathrm{M}}$ (magnetic moment/volume), then $\displaystyle |\overrightarrow{\mathrm{M}}|$ is :
Official answer
(2)
$\displaystyle 30000 \mathrm{Am}^{-1}$
More from Magnetism and Matter
- Two identical small bar magnets each of dipole moment 3 √5 J / T are placed at a center to center separation of 10 cm, with their axes perpendicular…2026
- The figure gives experimentally measured B vs. H variation in a ferromagnetic material. The retentivity, co-ercivity and saturation, respectively, of…2020
- The vertical component of the earth's magnetic field is 6 × 10^-5 T at any place where the angle of dip is 37^°. The earth's resultant magnetic field…2022
- Choose the correct option:2021
- Which of the following statements are correct? Electric monopoles do not exist whereas magnetic monopoles exist. Magnetic field lines due to a…2021
- Given below are two statements: Statement I: For diamagnetic substance, -1 ≤ χ<0, where χ is the magnetic susceptibility. Statement II: Diamagnetic…2023
- A solenoid has a core made of material with relative permeability 400. The magnetic field produced in the interior of solenoid is 1.0 T. The magnetic…2026
- A bar magnet with a magnetic moment 5.0 Am^2 is placed in parallel position relative to a magnetic field of 0.4 T. The amount of required work done…2023
JEE Main 2015 Physics question, with the answer from NTA’s final answer key. Where our answers come from.