JEE Mains Physics 2002-2019 Solved Video Solutions
The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B1. When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2. The ratio B1 / B2 is :
21
Nov
The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B1. When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2. The ratio B1 / B2 is : is [...]
An electron, a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii re, rp, rα respectively in a uniform magnetic field B. The relation between re, rp, rα is:-
21
Nov
An electron, a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii re, rp, rα respectively in a uniform magnetic field B. The relation between re, rp, rα is:- a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii [...]
A paramagnetic material has 10^28 atoms/m^3. Its magnetic susceptibility at temperature 350 K is 2.8 × 10^–4. Its susceptibility at 300 K is :
21
Nov
A paramagnetic material has 10^28 atoms/m^3. Its magnetic susceptibility at temperature 350 K is 2.8 × 10^–4. Its susceptibility at 300 K is : A paramagnetic material has 10^28 atoms/m^3. Its magnetic susceptibility at temperature 350 K is 2.8 × 10^–4. Its susceptibility at 300 K is : November 21, 2021 Category: Chapter 13 - [...]
A proton and an α-particle (with their masses in the ratio of 1 : 4 and charges in the ratio of 1 : 2) are accelerated from rest through a potential difference V. If a uniform magnetic field (B) is set up perpendicular to their velocities, the ratio of the radii rp : rα of the circular paths described by them will be :
21
Nov
A proton and an α-particle (with their masses in the ratio of 1 : 4 and charges in the ratio of 1 : 2) are accelerated from rest through a potential difference V. If a uniform magnetic field (B) is set up perpendicular to their velocities, the ratio of the radii rp : rα of [...]
As shown in the figure, two infinitely long, identical wires are bent by 90º and placed in such a way that the segments LP and QM are along the x-axis, while segments PS and QN are parallel to the y-axis. If OP = OQ = 4cm, and the magnitude of the magnetic field at O is 10^–4T, and the two wires carry equal currents (see figure), the magnitude of the current in each wire and the direction of the magnetic field at O will be (μ0 = 4p × 10^–7 NA^–2) :
21
Nov
As shown in the figure, two infinitely long, identical wires are bent by 90º and placed in such a way that the segments LP and QM are along the x-axis, while segments PS and QN are parallel to the y-axis. If OP = OQ = 4cm, and the magnitude of the magnetic field at O [...]
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Chapter 13 - Magnetic Effect of Current
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JEE Mains Physics 2002-2019 Solved Video Solutions
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and the magnitude of the magnetic field at O is 10^–4T ,
and the two wires carry equal currents (see figure) ,
As shown in the figure ,
identical wires are bent by 90º and placed in such a way that the segments LP and QM are along the x-axis ,
the magnitude of the current in each wire and the direction of the magnetic field at O will be (μ0 = 4p × 10^–7 NA^–2) : ,
Two infinitely long ,
while segments PS and QN are parallel to the y-axis. If OP = OQ = 4cm ,
A particle of mass m and charge q is in an electric and magnetic field given by vector E = 2i + 3j, B = 4j + 6k The charged particle is shifted from the origin to the point P(x = 1 ; y = 1) along a straight path. The magnitude of the total work done is :
21
Nov
A particle of mass m and charge q is in an electric and magnetic field given by vector E = 2i + 3j, B = 4j + 6k The charged particle is shifted from the origin to the point P(x = 1 ; y = 1) along a straight path. The magnitude of the total [...]
A paramagnetic substance in the form of a cube with sides 1 cm has a magnetic dipole moment of 20 x 10^–6 J/T when a magnetic intensity of 60 x 10^3 A/m is applied. Its magnetic susceptibility is :
21
Nov
A paramagnetic substance in the form of a cube with sides 1 cm has a magnetic dipole moment of 20 x 10^–6 J/T when a magnetic intensity of 60 x 10^3 A/m is applied. Its magnetic susceptibility is : A paramagnetic substance in the form of a cube with sides 1 cm has a magnetic [...]
A hoop and a solid cylinder of same mass and radius are made of a permanent magnetic material with their magnetic moment parallel to their respective axes. But the magnetic moment of hoop is twice of solid cylinder. They are placed in a uniform magnetic field in such a manner that their magnetic moments make a small angle with the field. If the oscillation periods of hoop and cylinder are Th and TC respectively, then
21
Nov
A hoop and a solid cylinder of same mass and radius are made of a permanent magnetic material with their magnetic moment parallel to their respective axes. But the magnetic moment of hoop is twice of solid cylinder. They are placed in a uniform magnetic field in such a manner that their magnetic moments make [...]
In an experiment, electrons are accelerated, from rest, by applying a voltage of 500 V. Calculate the radius of the path if a magnetic field 100 mT is then applied. [Charge of the electron = 1.6 × 10^–19 C Mass of the electron = 9.1 × 10^–31 kg]
21
Nov
In an experiment, electrons are accelerated, from rest, by applying a voltage of 500 V. Calculate the radius of the path if a magnetic field 100 mT is then applied. [Charge of the electron = 1.6 × 10^–19 C Mass of the electron = 9.1 × 10^–31 kg] by applying a voltage of 500 V. [...]
One of the two identical conducting wires of length L is bent in the form of a circular loop and the other one into a circular coil of N identical turns. If the same current is passed in both, the ratio of the magnetic field at the central of the loop (BL) to that at the centre of the coil (BC) , i.e. BL/BC will be:
21
Nov
One of the two identical conducting wires of length L is bent in the form of a circular loop and the other one into a circular coil of N identical turns. If the same current is passed in both, the ratio of the magnetic field at the central of the loop (BL) to that at [...]
Posted in:
Chapter 13 - Magnetic Effect of Current
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JEE Mains Physics 2002-2019 Solved Video Solutions
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Tags:
i.e. BL/BC will be: ,
One of the two identical conducting wires of length L is bent in the form of a circular loop and the other one into a circular coil of N identical turns. If the same current is passed in both ,
the ratio of the magnetic field at the central of the loop (BL) to that at the centre of the coil (BC) ,