06. Magnetic Dipole and Magnetic Moment Due to Current
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Moving Charges & Magnetism

153911 A straight horizontal conducting rod of length ' $L$ ' and mass ' $M$ ' is suspended by two vertical wires at its ends. If ' $I$ ' 'is the current passing through the rod, then in order that tension in the wire is zero, the magnetic field set up normal to the conductor is
(Neglect the mass of wire, $\mathrm{g}=$ acceleration due to gravity)

1 $\frac{\mathrm{IL}}{\mathrm{Mg}}$
2 $\frac{\mathrm{Mg}}{\mathrm{IL}^{2}}$
3 $\frac{\mathrm{Mg}}{\mathrm{IL}}$
4 $\frac{\mathrm{Mg}}{\mathrm{I}^{2} \mathrm{~L}}$
MHT-CET 2020
Moving Charges & Magnetism

153958 A bar magnet of magnetic moment $M$ and moment of inertial $I$ is freely suspended such that the magnetic axial line is in the direction of magnetic meridian. If the magnet is displaced by a very small angle $(\theta)$, the angular acceleration is (magnetic induction of earth's horizontal field $=\mathbf{B}_{\mathbf{H}}$ )

1 $\frac{\mathrm{MB}_{\mathrm{H}} \theta}{\mathrm{I}}$
2 $\frac{\mathrm{IB}_{\mathrm{H}} \theta}{\mathrm{M}}$
3 $\frac{\mathrm{M} \theta}{\mathrm{IB}_{\mathrm{H}}}$
4 $\frac{\mathrm{I} \theta}{\mathrm{MB}_{\mathrm{H}}}$
EAMCET-2007
Moving Charges & Magnetism

153960 Identify the wrongly matched quantity and unit pair

1 Pole strength$-\mathrm{Am}$
2 Magnetic susceptibility -dimensionless number
3 Intensity of magnetization - $\mathrm{Am}^{-1}$
4 Magnetic permeability -Henry $m$
J and K CET-2016
Moving Charges & Magnetism

153962 If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by $\mu_{\mathrm{d}}$, $\mu_{\mathrm{p}}$ and $\mu_{\mathrm{f}}$ respectively, then

1 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{f}} \neq 0$
2 $\mu_{\mathrm{p}}=0$ and $\mu_{\mathrm{f}} \neq 0$
3 $\mu_{\mathrm{d}}=0$ and $\mu_{\mathrm{p}} \neq 0$
4 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{p}}=0$
JIPMER- 2007
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Moving Charges & Magnetism

153911 A straight horizontal conducting rod of length ' $L$ ' and mass ' $M$ ' is suspended by two vertical wires at its ends. If ' $I$ ' 'is the current passing through the rod, then in order that tension in the wire is zero, the magnetic field set up normal to the conductor is
(Neglect the mass of wire, $\mathrm{g}=$ acceleration due to gravity)

1 $\frac{\mathrm{IL}}{\mathrm{Mg}}$
2 $\frac{\mathrm{Mg}}{\mathrm{IL}^{2}}$
3 $\frac{\mathrm{Mg}}{\mathrm{IL}}$
4 $\frac{\mathrm{Mg}}{\mathrm{I}^{2} \mathrm{~L}}$
MHT-CET 2020
Moving Charges & Magnetism

153958 A bar magnet of magnetic moment $M$ and moment of inertial $I$ is freely suspended such that the magnetic axial line is in the direction of magnetic meridian. If the magnet is displaced by a very small angle $(\theta)$, the angular acceleration is (magnetic induction of earth's horizontal field $=\mathbf{B}_{\mathbf{H}}$ )

1 $\frac{\mathrm{MB}_{\mathrm{H}} \theta}{\mathrm{I}}$
2 $\frac{\mathrm{IB}_{\mathrm{H}} \theta}{\mathrm{M}}$
3 $\frac{\mathrm{M} \theta}{\mathrm{IB}_{\mathrm{H}}}$
4 $\frac{\mathrm{I} \theta}{\mathrm{MB}_{\mathrm{H}}}$
EAMCET-2007
Moving Charges & Magnetism

153960 Identify the wrongly matched quantity and unit pair

1 Pole strength$-\mathrm{Am}$
2 Magnetic susceptibility -dimensionless number
3 Intensity of magnetization - $\mathrm{Am}^{-1}$
4 Magnetic permeability -Henry $m$
J and K CET-2016
Moving Charges & Magnetism

153962 If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by $\mu_{\mathrm{d}}$, $\mu_{\mathrm{p}}$ and $\mu_{\mathrm{f}}$ respectively, then

1 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{f}} \neq 0$
2 $\mu_{\mathrm{p}}=0$ and $\mu_{\mathrm{f}} \neq 0$
3 $\mu_{\mathrm{d}}=0$ and $\mu_{\mathrm{p}} \neq 0$
4 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{p}}=0$
JIPMER- 2007
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Moving Charges & Magnetism

153911 A straight horizontal conducting rod of length ' $L$ ' and mass ' $M$ ' is suspended by two vertical wires at its ends. If ' $I$ ' 'is the current passing through the rod, then in order that tension in the wire is zero, the magnetic field set up normal to the conductor is
(Neglect the mass of wire, $\mathrm{g}=$ acceleration due to gravity)

1 $\frac{\mathrm{IL}}{\mathrm{Mg}}$
2 $\frac{\mathrm{Mg}}{\mathrm{IL}^{2}}$
3 $\frac{\mathrm{Mg}}{\mathrm{IL}}$
4 $\frac{\mathrm{Mg}}{\mathrm{I}^{2} \mathrm{~L}}$
MHT-CET 2020
Moving Charges & Magnetism

153958 A bar magnet of magnetic moment $M$ and moment of inertial $I$ is freely suspended such that the magnetic axial line is in the direction of magnetic meridian. If the magnet is displaced by a very small angle $(\theta)$, the angular acceleration is (magnetic induction of earth's horizontal field $=\mathbf{B}_{\mathbf{H}}$ )

1 $\frac{\mathrm{MB}_{\mathrm{H}} \theta}{\mathrm{I}}$
2 $\frac{\mathrm{IB}_{\mathrm{H}} \theta}{\mathrm{M}}$
3 $\frac{\mathrm{M} \theta}{\mathrm{IB}_{\mathrm{H}}}$
4 $\frac{\mathrm{I} \theta}{\mathrm{MB}_{\mathrm{H}}}$
EAMCET-2007
Moving Charges & Magnetism

153960 Identify the wrongly matched quantity and unit pair

1 Pole strength$-\mathrm{Am}$
2 Magnetic susceptibility -dimensionless number
3 Intensity of magnetization - $\mathrm{Am}^{-1}$
4 Magnetic permeability -Henry $m$
J and K CET-2016
Moving Charges & Magnetism

153962 If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by $\mu_{\mathrm{d}}$, $\mu_{\mathrm{p}}$ and $\mu_{\mathrm{f}}$ respectively, then

1 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{f}} \neq 0$
2 $\mu_{\mathrm{p}}=0$ and $\mu_{\mathrm{f}} \neq 0$
3 $\mu_{\mathrm{d}}=0$ and $\mu_{\mathrm{p}} \neq 0$
4 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{p}}=0$
JIPMER- 2007
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Moving Charges & Magnetism

153911 A straight horizontal conducting rod of length ' $L$ ' and mass ' $M$ ' is suspended by two vertical wires at its ends. If ' $I$ ' 'is the current passing through the rod, then in order that tension in the wire is zero, the magnetic field set up normal to the conductor is
(Neglect the mass of wire, $\mathrm{g}=$ acceleration due to gravity)

1 $\frac{\mathrm{IL}}{\mathrm{Mg}}$
2 $\frac{\mathrm{Mg}}{\mathrm{IL}^{2}}$
3 $\frac{\mathrm{Mg}}{\mathrm{IL}}$
4 $\frac{\mathrm{Mg}}{\mathrm{I}^{2} \mathrm{~L}}$
MHT-CET 2020
Moving Charges & Magnetism

153958 A bar magnet of magnetic moment $M$ and moment of inertial $I$ is freely suspended such that the magnetic axial line is in the direction of magnetic meridian. If the magnet is displaced by a very small angle $(\theta)$, the angular acceleration is (magnetic induction of earth's horizontal field $=\mathbf{B}_{\mathbf{H}}$ )

1 $\frac{\mathrm{MB}_{\mathrm{H}} \theta}{\mathrm{I}}$
2 $\frac{\mathrm{IB}_{\mathrm{H}} \theta}{\mathrm{M}}$
3 $\frac{\mathrm{M} \theta}{\mathrm{IB}_{\mathrm{H}}}$
4 $\frac{\mathrm{I} \theta}{\mathrm{MB}_{\mathrm{H}}}$
EAMCET-2007
Moving Charges & Magnetism

153960 Identify the wrongly matched quantity and unit pair

1 Pole strength$-\mathrm{Am}$
2 Magnetic susceptibility -dimensionless number
3 Intensity of magnetization - $\mathrm{Am}^{-1}$
4 Magnetic permeability -Henry $m$
J and K CET-2016
Moving Charges & Magnetism

153962 If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by $\mu_{\mathrm{d}}$, $\mu_{\mathrm{p}}$ and $\mu_{\mathrm{f}}$ respectively, then

1 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{f}} \neq 0$
2 $\mu_{\mathrm{p}}=0$ and $\mu_{\mathrm{f}} \neq 0$
3 $\mu_{\mathrm{d}}=0$ and $\mu_{\mathrm{p}} \neq 0$
4 $\mu_{\mathrm{d}} \neq 0$ and $\mu_{\mathrm{p}}=0$
JIPMER- 2007