153808
Two long parallel straight conductors $A$ and B, separated $1 \mathrm{~m}$ apart in air, carry currents of $1 \mathrm{~A}, 2 \mathrm{~A}$ respectively in the same direction. A third straight conductor $C$, placed midway between $A$ and $B$ and parallel to both, carries a current of $1.5 \mathrm{~A}$ in the opposite direction (ref. diagram). The force/unit length, $\mu \mathrm{N} / \mathrm{m}$, on $\mathrm{C}$ is
153811 A certain length of insulated wire can be bent to form either a single circular loop (case I) or a double loop of smaller radius (case II). When the same steady current is passed through the wire, the ratio of the magnetic field at the centre in case $I$ to that in case $I I$ is
153812 A square coil of edge $I$ having $n$ turns carries a current $i$. It is kept on a smooth horizontal plate. A uniform magnetic field $B$ exists in a direction parallel to an edge. The total mass of the coil is $\mathrm{m}$. Minimum value of $B$ for which the coil will start tipping over.
153808
Two long parallel straight conductors $A$ and B, separated $1 \mathrm{~m}$ apart in air, carry currents of $1 \mathrm{~A}, 2 \mathrm{~A}$ respectively in the same direction. A third straight conductor $C$, placed midway between $A$ and $B$ and parallel to both, carries a current of $1.5 \mathrm{~A}$ in the opposite direction (ref. diagram). The force/unit length, $\mu \mathrm{N} / \mathrm{m}$, on $\mathrm{C}$ is
153811 A certain length of insulated wire can be bent to form either a single circular loop (case I) or a double loop of smaller radius (case II). When the same steady current is passed through the wire, the ratio of the magnetic field at the centre in case $I$ to that in case $I I$ is
153812 A square coil of edge $I$ having $n$ turns carries a current $i$. It is kept on a smooth horizontal plate. A uniform magnetic field $B$ exists in a direction parallel to an edge. The total mass of the coil is $\mathrm{m}$. Minimum value of $B$ for which the coil will start tipping over.
153808
Two long parallel straight conductors $A$ and B, separated $1 \mathrm{~m}$ apart in air, carry currents of $1 \mathrm{~A}, 2 \mathrm{~A}$ respectively in the same direction. A third straight conductor $C$, placed midway between $A$ and $B$ and parallel to both, carries a current of $1.5 \mathrm{~A}$ in the opposite direction (ref. diagram). The force/unit length, $\mu \mathrm{N} / \mathrm{m}$, on $\mathrm{C}$ is
153811 A certain length of insulated wire can be bent to form either a single circular loop (case I) or a double loop of smaller radius (case II). When the same steady current is passed through the wire, the ratio of the magnetic field at the centre in case $I$ to that in case $I I$ is
153812 A square coil of edge $I$ having $n$ turns carries a current $i$. It is kept on a smooth horizontal plate. A uniform magnetic field $B$ exists in a direction parallel to an edge. The total mass of the coil is $\mathrm{m}$. Minimum value of $B$ for which the coil will start tipping over.
153808
Two long parallel straight conductors $A$ and B, separated $1 \mathrm{~m}$ apart in air, carry currents of $1 \mathrm{~A}, 2 \mathrm{~A}$ respectively in the same direction. A third straight conductor $C$, placed midway between $A$ and $B$ and parallel to both, carries a current of $1.5 \mathrm{~A}$ in the opposite direction (ref. diagram). The force/unit length, $\mu \mathrm{N} / \mathrm{m}$, on $\mathrm{C}$ is
153811 A certain length of insulated wire can be bent to form either a single circular loop (case I) or a double loop of smaller radius (case II). When the same steady current is passed through the wire, the ratio of the magnetic field at the centre in case $I$ to that in case $I I$ is
153812 A square coil of edge $I$ having $n$ turns carries a current $i$. It is kept on a smooth horizontal plate. A uniform magnetic field $B$ exists in a direction parallel to an edge. The total mass of the coil is $\mathrm{m}$. Minimum value of $B$ for which the coil will start tipping over.
