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Class XII Physics Magnetism and Matter 2
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Question 1
Two short bar magnets of length 1 cm each have magnetic moments 1.20 Am2 and 1.00 Am2 respectively. They are placed on a horizontal table parallel to each other with their N poles pointing towards the South. They have a common magnetic equator and are separated by a distance of 20.0 cm. The value of the resultant horizontal magnetic induction at the mid - point O of the line joining their centres is close to
(Horizontal component of earth’s magnetic induction is 3.6 × 10–5 Wb/m2)
(Horizontal component of earth’s magnetic induction is 3.6 × 10–5 Wb/m2)
Question 2
Curie temperature is the temperature above which
Question 3
A charge q is moving with a velocity 
= 
m/s at a point in a magnetic field and experiences a force 
= q (–1
+ 1
)N. If the charge is moving with a velocity 
= 1
m/s at the same point, it experiences and a force 
= q [
–1
] N. The magnetic induction 
at that point is-
= m/s at a point in a magnetic field and experiences a force = q (–1+ 1)N. If the charge is moving with a velocity = 1m/s at the same point, it experiences and a force = q [–1] N. The magnetic induction at that point is- Question 4
A particle moves in a circular path of diameter 1.0 m under the action of magnetic field of 0.40 Tesla. An electric field of 200 V/m makes the path of particle straight. Find the charge/mass ratio of the particle.
Question 5
A charged particle is released from rest in a region of steady and uniform electric and magnetic field which are parallel to each other. The particle will move in a -
Question 6
A particle of mass M and charge Q moving with velocity 
describes a circular path of radius R when subjected to a uniform transverse magnetic field of induction B. The work done by the field when the particle completes one full circle is
describes a circular path of radius R when subjected to a uniform transverse magnetic field of induction B. The work done by the field when the particle completes one full circle isQuestion 7
A particle of charge −16 × 10−18 coulomb moving with velocity 10 ms−1 along the x-axis enters a region where a magnetic field of induction B is along the y –axis, and an electric field of magnitude 104 V/m is along the negative z-axis. If the charged particle continues moving along the x-axis, the magnitude of B is
Question 8
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity then
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Jan 19JEE & BITSAT
