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Recent questions tagged magnets
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vote
1
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Assume the dipole model for earth’* magnetic field B which is given by BV = vertical component of magnetic field =μ0/4π 2mcosθ/r^3
asked
Apr 4, 2019
in
Class 12
by
kratos
neet
cbse
aiims
magnetism and matter
magnets
class-12
+3
votes
1
answer
A toroid of n turns, mean radius R and cross-sectional radius a carries current I. It is placed on a horizontal table
asked
Apr 3, 2019
in
Class 12
by
kratos
cbse
magnetism and matter
magnets
class-12
mognetic dipole
+2
votes
1
answer
write the range of relative magnetic permeability of these materials.
asked
Mar 31, 2019
in
Class 12
by
kratos
neet
cbse
aiims
magnetism and matter
magnets
class-12
+2
votes
1
answer
Define magnetic ’dip’ and ‘declination’ at a place.
asked
Mar 23, 2019
in
Class 12
by
kratos
cbse
matter
properties of magnetic substances
magnetism and matter
magnets
magnetism
class-12
bitsat
+1
vote
1
answer
Answer the following questions:(a) The earth’* magnetic field varies from point to point in space.
asked
Mar 23, 2019
in
Class 12
by
kratos
neet
cbse
aiims
magnetism and matter
magnets
class-12
+1
vote
1
answer
Angle of dip is 90° at
asked
Mar 18, 2019
in
Class 12
by
kratos
neet
cbse
aiims
magnetism and matter
magnets
class-12
+2
votes
1
answer
Ria and Rama are students of Class-X. Ria is very much organised and maintained. The teachers love her.
asked
Mar 16, 2019
in
Class 12
by
kratos
cbse
class-5
class-10
magnetism and matter
magnets
lets clean together
class-12
periodic classification of elements
+3
votes
1
answer
The angles of dip at the poles and the equator respectively are
asked
Mar 15, 2019
in
Class 12
by
kratos
neet
cbse
aiims
magnetism and matter
magnets
class-12
+3
votes
1
answer
Assertion : Magnetic field lines are continuous and closed.
asked
Mar 15, 2019
in
Class 12
by
kratos
neet
cbse
aiims
magnetism and matter
magnets
class-12
+2
votes
1
answer
The length of a thin bar magnet is 10 cm, the strength of the poles being 50 e.m.u.
asked
Mar 13, 2019
in
JEE
by
kratos
jee
jee mains
magnets
+2
votes
1
answer
A 250-turn rectangular coil of length 2.1 cm and width 1.25 cm carries a current of 85 μA and subjected to a magnetic field of strength 0.85 T.
asked
Mar 13, 2019
in
Class 12
by
kratos
neet
cbse
magnetism and matter
magnets
class-12
mognetic dipole
+1
vote
1
answer
Where on the surface of Earth is the vertical component of Earth’* magnetic field zero?
asked
Mar 8, 2019
in
Class 12
by
kratos
cbse
matter
properties of magnetic substances
magnetism and matter
magnets
magnetism
class-12
+1
vote
1
answer
In what way is the behaviour of a diamagnetic material different from that of a paramagnetic,
asked
Mar 4, 2019
in
Class 12
by
kratos
class-12
cbse
magnetism and matter
magnets
+1
vote
1
answer
Can you bring two similar poles of two different magnetic close together easily? Why?
asked
Mar 1, 2019
in
JEE
by
kratos
class-8
jee
class-6
jee mains
magnets
magnetism
+2
votes
1
answer
Out of the two magnetic materials, 'A' has relative permeability slightly greater than unity while 'B' has less than
asked
Feb 25, 2019
in
Class 12
by
kratos
class-12
cbse
magnetism and matter
magnets
+2
votes
1
answer
Show diagrammatically the behavior of magnetic field lines in the presence of (i) paramagnetic and (ii) diamagnetic
asked
Feb 12, 2019
in
Class 12
by
kratos
class-12
cbse
magnetism and matter
magnets
+3
votes
1
answer
The relative permeability of a substance X is slightly less than unity and that of substance Y is slightly more than unity then –
asked
Feb 5, 2019
in
JEE
by
kratos
isc
cbse
magnetic effects of electric current
jee
icse
magnetism and matter
magnets
electromagnetism
magnetism
jee mains
class-12
induction
+2
votes
1
answer
A magnetic needle has a magnetic moment of 50 e.m.u. cm and weighs 5 g-wt.
asked
Feb 4, 2019
in
JEE
by
kratos
jee
jee mains
magnets
+2
votes
1
answer
A circular coil of N turns and radius R carries a current I. It is unwound and rewound to make another
asked
Jan 24, 2019
in
JEE
by
kratos
cbse
moving charges and magnetism
moving charges
magnetism and matter
jee mains
magnetism
class-12
mognetic dipole
magnets
+3
votes
1
answer
The intensity of magnetic field due to an isolated pole of strength mp at a point distant r from it will be
asked
Jan 20, 2019
in
Class 12
by
kratos
neet
cbse
aiims
magnetism and matter
magnets
class-12
mognetic dipole
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