153887 The magnetic moments associated with two closely wound circular coils $A$ and $B$ of radius $r_{A}=10 \mathrm{~cm}$ and $r_{B}=20 \mathrm{~cm}$ respectively are equal if: (Where $N_{A}, I_{A}$, and $N_{B}, I_{B}$ are number of turn and current of $A$ and $b$ respectively)

153888 Two concentric circular loops of radii $r_{1}=30$ $\mathrm{cm}$ and $r_{2}=50 \mathrm{~cm}$ are placed in $X-Y$ plane as shown in the figure. A current $I=7 \mathrm{~A}$ is flowing through them in the direction as shown in figure. The net magnetic moment of this system of two circular loops is approximately:

153889 A bar magnet having a magnetic moment of 2.0 $\times 10^{5} \mathrm{JT}^{-1}$, is placed along the direction of uniform magnetic field of magnitude $B=14 \times$ $10^{-5} \mathrm{~T}$. The work done in rotating the magnet slowly through $60^{\circ}$ from the direction of field is:

153890 A thin magnetic needle is placed in a magnetic field of $200 \mathrm{G}$ with its axis at $30^{\circ}$ to the direction of the field. find the magnetic moment of the needle if it experience a torque of $\mathbf{0 . 0 1 2}$ $\mathrm{Nm}$ in this field.

153891 A bar magnet of length ' $l$ ' and magnetic dipole moment ' $M$ ' is bent in the form of an arc as shown in fig. The new magnetic dipole moment will be-

153887 The magnetic moments associated with two closely wound circular coils $A$ and $B$ of radius $r_{A}=10 \mathrm{~cm}$ and $r_{B}=20 \mathrm{~cm}$ respectively are equal if: (Where $N_{A}, I_{A}$, and $N_{B}, I_{B}$ are number of turn and current of $A$ and $b$ respectively)

153888 Two concentric circular loops of radii $r_{1}=30$ $\mathrm{cm}$ and $r_{2}=50 \mathrm{~cm}$ are placed in $X-Y$ plane as shown in the figure. A current $I=7 \mathrm{~A}$ is flowing through them in the direction as shown in figure. The net magnetic moment of this system of two circular loops is approximately:

153889 A bar magnet having a magnetic moment of 2.0 $\times 10^{5} \mathrm{JT}^{-1}$, is placed along the direction of uniform magnetic field of magnitude $B=14 \times$ $10^{-5} \mathrm{~T}$. The work done in rotating the magnet slowly through $60^{\circ}$ from the direction of field is:

153890 A thin magnetic needle is placed in a magnetic field of $200 \mathrm{G}$ with its axis at $30^{\circ}$ to the direction of the field. find the magnetic moment of the needle if it experience a torque of $\mathbf{0 . 0 1 2}$ $\mathrm{Nm}$ in this field.

153891 A bar magnet of length ' $l$ ' and magnetic dipole moment ' $M$ ' is bent in the form of an arc as shown in fig. The new magnetic dipole moment will be-

153887 The magnetic moments associated with two closely wound circular coils $A$ and $B$ of radius $r_{A}=10 \mathrm{~cm}$ and $r_{B}=20 \mathrm{~cm}$ respectively are equal if: (Where $N_{A}, I_{A}$, and $N_{B}, I_{B}$ are number of turn and current of $A$ and $b$ respectively)

153888 Two concentric circular loops of radii $r_{1}=30$ $\mathrm{cm}$ and $r_{2}=50 \mathrm{~cm}$ are placed in $X-Y$ plane as shown in the figure. A current $I=7 \mathrm{~A}$ is flowing through them in the direction as shown in figure. The net magnetic moment of this system of two circular loops is approximately:

153889 A bar magnet having a magnetic moment of 2.0 $\times 10^{5} \mathrm{JT}^{-1}$, is placed along the direction of uniform magnetic field of magnitude $B=14 \times$ $10^{-5} \mathrm{~T}$. The work done in rotating the magnet slowly through $60^{\circ}$ from the direction of field is:

153890 A thin magnetic needle is placed in a magnetic field of $200 \mathrm{G}$ with its axis at $30^{\circ}$ to the direction of the field. find the magnetic moment of the needle if it experience a torque of $\mathbf{0 . 0 1 2}$ $\mathrm{Nm}$ in this field.

153891 A bar magnet of length ' $l$ ' and magnetic dipole moment ' $M$ ' is bent in the form of an arc as shown in fig. The new magnetic dipole moment will be-

153887 The magnetic moments associated with two closely wound circular coils $A$ and $B$ of radius $r_{A}=10 \mathrm{~cm}$ and $r_{B}=20 \mathrm{~cm}$ respectively are equal if: (Where $N_{A}, I_{A}$, and $N_{B}, I_{B}$ are number of turn and current of $A$ and $b$ respectively)

153888 Two concentric circular loops of radii $r_{1}=30$ $\mathrm{cm}$ and $r_{2}=50 \mathrm{~cm}$ are placed in $X-Y$ plane as shown in the figure. A current $I=7 \mathrm{~A}$ is flowing through them in the direction as shown in figure. The net magnetic moment of this system of two circular loops is approximately:

153889 A bar magnet having a magnetic moment of 2.0 $\times 10^{5} \mathrm{JT}^{-1}$, is placed along the direction of uniform magnetic field of magnitude $B=14 \times$ $10^{-5} \mathrm{~T}$. The work done in rotating the magnet slowly through $60^{\circ}$ from the direction of field is:

153890 A thin magnetic needle is placed in a magnetic field of $200 \mathrm{G}$ with its axis at $30^{\circ}$ to the direction of the field. find the magnetic moment of the needle if it experience a torque of $\mathbf{0 . 0 1 2}$ $\mathrm{Nm}$ in this field.

153891 A bar magnet of length ' $l$ ' and magnetic dipole moment ' $M$ ' is bent in the form of an arc as shown in fig. The new magnetic dipole moment will be-

153887 The magnetic moments associated with two closely wound circular coils $A$ and $B$ of radius $r_{A}=10 \mathrm{~cm}$ and $r_{B}=20 \mathrm{~cm}$ respectively are equal if: (Where $N_{A}, I_{A}$, and $N_{B}, I_{B}$ are number of turn and current of $A$ and $b$ respectively)

153888 Two concentric circular loops of radii $r_{1}=30$ $\mathrm{cm}$ and $r_{2}=50 \mathrm{~cm}$ are placed in $X-Y$ plane as shown in the figure. A current $I=7 \mathrm{~A}$ is flowing through them in the direction as shown in figure. The net magnetic moment of this system of two circular loops is approximately:

153889 A bar magnet having a magnetic moment of 2.0 $\times 10^{5} \mathrm{JT}^{-1}$, is placed along the direction of uniform magnetic field of magnitude $B=14 \times$ $10^{-5} \mathrm{~T}$. The work done in rotating the magnet slowly through $60^{\circ}$ from the direction of field is:

153890 A thin magnetic needle is placed in a magnetic field of $200 \mathrm{G}$ with its axis at $30^{\circ}$ to the direction of the field. find the magnetic moment of the needle if it experience a torque of $\mathbf{0 . 0 1 2}$ $\mathrm{Nm}$ in this field.

153891 A bar magnet of length ' $l$ ' and magnetic dipole moment ' $M$ ' is bent in the form of an arc as shown in fig. The new magnetic dipole moment will be-