# IIT JEE Previous year questions on Magnetism – A (12.4.15), Class 12 Physics in Hindi - Videos

6
418

This Physics video lecture is on Class 12 NCERT Physics book, Magnetism, Chapter-4, Moving charges and magnetism, Part 15 – Previous year’s IIT JEE solved questions from the last 15 years.

Questions covered in this video are:
1)2002-S A particle of mass m and charge q moves with a constant velocity v along the positive x direction. It enters a region containing a uniform magnetic field B directed along the negative z direction, extending from x=a and x=b. The minimum value of V required so that the particle can just enter the region xb is
2)2002-S A long straight wire along the z-axis carries a current I in the negative z direction. The magnetic vector field at a point having coordinates (x, y) in the Z=0 plane is
3) 2002-S The magnetic field lines due to a bar magnet are correctly shown in
4) 2003-S For a positively charged particle moving in a x-y plane initially along the x-axis, there is a sudden change in its path due to the presence of electric and/or magnetic fields beyond P. The curved path is shown in the x-y plane and is found to be non-circular. Which one of the following combinations is possible?
5) 2003-S A conducting loop carrying a current I is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to
6) 2003-S A current carrying loop is placed in a uniform magnetic field in four different orientations, i, ii, iii & iv, arrange them in the decreasing order of Potential Energy.
7) 2003-M A ring of radius R having uniformly distributed charge Q is mounted on a rod suspended by two identical strings. The tension in strings in equilibrium is To. Now a vertical magnetic field is switched on and ring is rotated at constant angular velocity ω. Find the maximum ω with which the ring can be rotated if the strings can withstand a maximum tension of 3To/2.
8) 2004-S An electron travelling with a speed u along the positive x-axis enters into a region of magnetic field where . It comes out of the region with speed v, then
9) 2004-M An α-particle and a proton are accelerated
from rest through same potential difference and both enter into a uniform
perpendicular magnetic field. Find the ratio of their radii of curvature.
10) 2005-M In a moving coil galvanometer, torque on
the coil can be expressed as τ=ki, where i is current through the wire and k is
constant. The rectangular coil of the galvanometer having numbers of turns N,
area A and moment of inertia I is placed in magnetic field B.
Find

(a) k in terms of given parameters N, I, A and B.

Physics video lecture for class 12 in Hindi for the preparation of CBSE, IIT JEE, JEE, NEET, AIPMT, ICSE and all other Boards and entrance examinations.

Moving charges and Magnetism playlist – https://goo.gl/Wqx33N

source

1. Gautam Pandey

Sir neet ka v dalo

2. kishan kumar

hi sir

3. kishan kumar

thax

4. kishan kumar

sir optics kab tak start hoga

5. Hrithik Kale

Thanks for video sir

6. Hrithik Kale

Sir provide 2016 advanced magnetism question S also