00. Biot-Savart's Law and Magnetic Field, Lorentz Force
Moving Charges & Magnetism

153366 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 the plane of the coil is normal to the external magnetic field
2 the plane of the coil is parallel to the external magnetic field
3 flux through the coil is minimum
4 torque on the coil is maximum
Moving Charges & Magnetism

153367 There is no couple acting when two bar magnets are placed coaxially separated by a distance because

1 there are no forces on the poles
2 the forces are parallel and their lines of action do not coincide
3 the forces are perpendicular to each other
4 the forces act along the same line
Moving Charges & Magnetism

153368 A and $B$ are sections of two long parallel wires placed perpendicular to the plane of the paper. They carry currents of $5 \mathrm{~A}$ and 10 A respectively in the directions indicated in the figure. If the separation between them is $3 \mathbf{~ m}$ the zero of the magnetic field in the plane of the paper is at a point

1 $3 \mathrm{~m}$ to the left of $\mathrm{A}$
2 $3 \mathrm{~m}$ to the right of $\mathrm{B}$
3 $2 \mathrm{~m}$ to the right of $\mathrm{A}$
4 $2 \mathrm{~m}$ to the left of B
Moving Charges & Magnetism

153369 An electron beam travels with a velocity of $\mathbf{1 . 6}$ $\times 10^{7} \mathrm{~ms}^{-1}$ perpendicular to magnetic field of intensity $0.1 \mathrm{~T}$. The radius of the path of the electron beam $\left(\mathrm{m}_{\mathrm{e}}=\mathbf{9} \times \mathbf{1 0}^{-31} \mathrm{~kg}\right)$

1 $9 \times 10^{-5} \mathrm{~m}$
2 $9 \times 10^{-2} \mathrm{~m}$
3 $9 \times 10^{-4} \mathrm{~m}$
4 $9 \times 10^{-3} \mathrm{~m}$
Moving Charges & Magnetism

153366 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 the plane of the coil is normal to the external magnetic field
2 the plane of the coil is parallel to the external magnetic field
3 flux through the coil is minimum
4 torque on the coil is maximum
Moving Charges & Magnetism

153367 There is no couple acting when two bar magnets are placed coaxially separated by a distance because

1 there are no forces on the poles
2 the forces are parallel and their lines of action do not coincide
3 the forces are perpendicular to each other
4 the forces act along the same line
Moving Charges & Magnetism

153368 A and $B$ are sections of two long parallel wires placed perpendicular to the plane of the paper. They carry currents of $5 \mathrm{~A}$ and 10 A respectively in the directions indicated in the figure. If the separation between them is $3 \mathbf{~ m}$ the zero of the magnetic field in the plane of the paper is at a point

1 $3 \mathrm{~m}$ to the left of $\mathrm{A}$
2 $3 \mathrm{~m}$ to the right of $\mathrm{B}$
3 $2 \mathrm{~m}$ to the right of $\mathrm{A}$
4 $2 \mathrm{~m}$ to the left of B
Moving Charges & Magnetism

153369 An electron beam travels with a velocity of $\mathbf{1 . 6}$ $\times 10^{7} \mathrm{~ms}^{-1}$ perpendicular to magnetic field of intensity $0.1 \mathrm{~T}$. The radius of the path of the electron beam $\left(\mathrm{m}_{\mathrm{e}}=\mathbf{9} \times \mathbf{1 0}^{-31} \mathrm{~kg}\right)$

1 $9 \times 10^{-5} \mathrm{~m}$
2 $9 \times 10^{-2} \mathrm{~m}$
3 $9 \times 10^{-4} \mathrm{~m}$
4 $9 \times 10^{-3} \mathrm{~m}$
Moving Charges & Magnetism

153366 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 the plane of the coil is normal to the external magnetic field
2 the plane of the coil is parallel to the external magnetic field
3 flux through the coil is minimum
4 torque on the coil is maximum
Moving Charges & Magnetism

153367 There is no couple acting when two bar magnets are placed coaxially separated by a distance because

1 there are no forces on the poles
2 the forces are parallel and their lines of action do not coincide
3 the forces are perpendicular to each other
4 the forces act along the same line
Moving Charges & Magnetism

153368 A and $B$ are sections of two long parallel wires placed perpendicular to the plane of the paper. They carry currents of $5 \mathrm{~A}$ and 10 A respectively in the directions indicated in the figure. If the separation between them is $3 \mathbf{~ m}$ the zero of the magnetic field in the plane of the paper is at a point

1 $3 \mathrm{~m}$ to the left of $\mathrm{A}$
2 $3 \mathrm{~m}$ to the right of $\mathrm{B}$
3 $2 \mathrm{~m}$ to the right of $\mathrm{A}$
4 $2 \mathrm{~m}$ to the left of B
Moving Charges & Magnetism

153369 An electron beam travels with a velocity of $\mathbf{1 . 6}$ $\times 10^{7} \mathrm{~ms}^{-1}$ perpendicular to magnetic field of intensity $0.1 \mathrm{~T}$. The radius of the path of the electron beam $\left(\mathrm{m}_{\mathrm{e}}=\mathbf{9} \times \mathbf{1 0}^{-31} \mathrm{~kg}\right)$

1 $9 \times 10^{-5} \mathrm{~m}$
2 $9 \times 10^{-2} \mathrm{~m}$
3 $9 \times 10^{-4} \mathrm{~m}$
4 $9 \times 10^{-3} \mathrm{~m}$
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Moving Charges & Magnetism

153366 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 the plane of the coil is normal to the external magnetic field
2 the plane of the coil is parallel to the external magnetic field
3 flux through the coil is minimum
4 torque on the coil is maximum
Moving Charges & Magnetism

153367 There is no couple acting when two bar magnets are placed coaxially separated by a distance because

1 there are no forces on the poles
2 the forces are parallel and their lines of action do not coincide
3 the forces are perpendicular to each other
4 the forces act along the same line
Moving Charges & Magnetism

153368 A and $B$ are sections of two long parallel wires placed perpendicular to the plane of the paper. They carry currents of $5 \mathrm{~A}$ and 10 A respectively in the directions indicated in the figure. If the separation between them is $3 \mathbf{~ m}$ the zero of the magnetic field in the plane of the paper is at a point

1 $3 \mathrm{~m}$ to the left of $\mathrm{A}$
2 $3 \mathrm{~m}$ to the right of $\mathrm{B}$
3 $2 \mathrm{~m}$ to the right of $\mathrm{A}$
4 $2 \mathrm{~m}$ to the left of B
Moving Charges & Magnetism

153369 An electron beam travels with a velocity of $\mathbf{1 . 6}$ $\times 10^{7} \mathrm{~ms}^{-1}$ perpendicular to magnetic field of intensity $0.1 \mathrm{~T}$. The radius of the path of the electron beam $\left(\mathrm{m}_{\mathrm{e}}=\mathbf{9} \times \mathbf{1 0}^{-31} \mathrm{~kg}\right)$

1 $9 \times 10^{-5} \mathrm{~m}$
2 $9 \times 10^{-2} \mathrm{~m}$
3 $9 \times 10^{-4} \mathrm{~m}$
4 $9 \times 10^{-3} \mathrm{~m}$