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

153966 The frequency of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments $M_{1}$ and $M_{2}$ is 6 $\mathrm{Hz}$ when like poles are tied and it is $2 \mathrm{~Hz}$ when the unlike poles are tied together, then the ratio $M_{1}: M_{2}$ is

1 $4: 5$
2 $5: 4$
3 $1: 3$
4 $3: 1$
AP EAMCET -2010
Moving Charges & Magnetism

153967 Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of magnetic moment is

1 $2: \pi$
2 $\pi: 2$
3 $\pi: 4$
4 $4: \pi$
UPSEE - 2010
Moving Charges & Magnetism

153968 A wire of length $2 \mathrm{~m}$ carrying a current of $1 \mathrm{~A}$ is bent to form a circle, the magnetic moment of the coil is

1 $2 \pi \mathrm{Am}^{2}$
2 $\frac{1}{\pi} \mathrm{Am}^{2}$
3 $\pi \mathrm{Am}^{2}$
4 $\frac{2}{\pi} \mathrm{Am}^{2}$
UPSEE - 2009
Moving Charges & Magnetism

153969 Two circular concentric loops of radii $r_{1}=20 \mathrm{~cm}$ and $r_{2}=30 \mathrm{~cm}$ are placed in the $X Y$ plane as shown in the figure. A current $\mathrm{l}=7 \mathrm{amp}$ is flowing through them. The magnetic moment of this loop system is

1 $+0.4 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
2 $-1.5 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
3 $+1.1 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
4 $+1.3 \hat{\mathrm{j}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
AMU-2010
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Moving Charges & Magnetism

153966 The frequency of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments $M_{1}$ and $M_{2}$ is 6 $\mathrm{Hz}$ when like poles are tied and it is $2 \mathrm{~Hz}$ when the unlike poles are tied together, then the ratio $M_{1}: M_{2}$ is

1 $4: 5$
2 $5: 4$
3 $1: 3$
4 $3: 1$
AP EAMCET -2010
Moving Charges & Magnetism

153967 Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of magnetic moment is

1 $2: \pi$
2 $\pi: 2$
3 $\pi: 4$
4 $4: \pi$
UPSEE - 2010
Moving Charges & Magnetism

153968 A wire of length $2 \mathrm{~m}$ carrying a current of $1 \mathrm{~A}$ is bent to form a circle, the magnetic moment of the coil is

1 $2 \pi \mathrm{Am}^{2}$
2 $\frac{1}{\pi} \mathrm{Am}^{2}$
3 $\pi \mathrm{Am}^{2}$
4 $\frac{2}{\pi} \mathrm{Am}^{2}$
UPSEE - 2009
Moving Charges & Magnetism

153969 Two circular concentric loops of radii $r_{1}=20 \mathrm{~cm}$ and $r_{2}=30 \mathrm{~cm}$ are placed in the $X Y$ plane as shown in the figure. A current $\mathrm{l}=7 \mathrm{amp}$ is flowing through them. The magnetic moment of this loop system is

1 $+0.4 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
2 $-1.5 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
3 $+1.1 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
4 $+1.3 \hat{\mathrm{j}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
AMU-2010
NEET DIGITAL LIBRARY
Moving Charges & Magnetism

153966 The frequency of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments $M_{1}$ and $M_{2}$ is 6 $\mathrm{Hz}$ when like poles are tied and it is $2 \mathrm{~Hz}$ when the unlike poles are tied together, then the ratio $M_{1}: M_{2}$ is

1 $4: 5$
2 $5: 4$
3 $1: 3$
4 $3: 1$
AP EAMCET -2010
Moving Charges & Magnetism

153967 Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of magnetic moment is

1 $2: \pi$
2 $\pi: 2$
3 $\pi: 4$
4 $4: \pi$
UPSEE - 2010
Moving Charges & Magnetism

153968 A wire of length $2 \mathrm{~m}$ carrying a current of $1 \mathrm{~A}$ is bent to form a circle, the magnetic moment of the coil is

1 $2 \pi \mathrm{Am}^{2}$
2 $\frac{1}{\pi} \mathrm{Am}^{2}$
3 $\pi \mathrm{Am}^{2}$
4 $\frac{2}{\pi} \mathrm{Am}^{2}$
UPSEE - 2009
Moving Charges & Magnetism

153969 Two circular concentric loops of radii $r_{1}=20 \mathrm{~cm}$ and $r_{2}=30 \mathrm{~cm}$ are placed in the $X Y$ plane as shown in the figure. A current $\mathrm{l}=7 \mathrm{amp}$ is flowing through them. The magnetic moment of this loop system is

1 $+0.4 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
2 $-1.5 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
3 $+1.1 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
4 $+1.3 \hat{\mathrm{j}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
AMU-2010
Join With Us for More Updates
Moving Charges & Magnetism

153966 The frequency of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments $M_{1}$ and $M_{2}$ is 6 $\mathrm{Hz}$ when like poles are tied and it is $2 \mathrm{~Hz}$ when the unlike poles are tied together, then the ratio $M_{1}: M_{2}$ is

1 $4: 5$
2 $5: 4$
3 $1: 3$
4 $3: 1$
AP EAMCET -2010
Moving Charges & Magnetism

153967 Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of magnetic moment is

1 $2: \pi$
2 $\pi: 2$
3 $\pi: 4$
4 $4: \pi$
UPSEE - 2010
Moving Charges & Magnetism

153968 A wire of length $2 \mathrm{~m}$ carrying a current of $1 \mathrm{~A}$ is bent to form a circle, the magnetic moment of the coil is

1 $2 \pi \mathrm{Am}^{2}$
2 $\frac{1}{\pi} \mathrm{Am}^{2}$
3 $\pi \mathrm{Am}^{2}$
4 $\frac{2}{\pi} \mathrm{Am}^{2}$
UPSEE - 2009
Moving Charges & Magnetism

153969 Two circular concentric loops of radii $r_{1}=20 \mathrm{~cm}$ and $r_{2}=30 \mathrm{~cm}$ are placed in the $X Y$ plane as shown in the figure. A current $\mathrm{l}=7 \mathrm{amp}$ is flowing through them. The magnetic moment of this loop system is

1 $+0.4 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
2 $-1.5 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
3 $+1.1 \hat{\mathrm{k}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
4 $+1.3 \hat{\mathrm{j}}\left(\mathrm{A} \mathrm{m}^{2}\right)$
AMU-2010
For More Updates join with Us