360635
The ratio of magnetic fields at points \(A\) and \(B\) located on axial line of a short bar magnet at 24 \(cm\) and 48 \(cm\) will be
1 3
2 8
3 \(1 / 2 \sqrt{2}\)
4 4
Explanation:
Here, \({d_1} = 24\,cm\) and \({d_2} = 48\,cm\) As, the magnet is short, \(\frac{{{B_1}}}{{{B_2}}} = \frac{{d_2^3}}{{d_1^3}} = {\left( {\frac{{48\;cm}}{{24\;cm}}} \right)^3} = 8\)
PHXII05:MAGNETISM and MATTER
360636
The dipole moment of a short bar magnet is \(1.25\;A - {m^2}\). The magnetic field on its axis at a distance of 0.5 metre from the centre of the magnet is :
360635
The ratio of magnetic fields at points \(A\) and \(B\) located on axial line of a short bar magnet at 24 \(cm\) and 48 \(cm\) will be
1 3
2 8
3 \(1 / 2 \sqrt{2}\)
4 4
Explanation:
Here, \({d_1} = 24\,cm\) and \({d_2} = 48\,cm\) As, the magnet is short, \(\frac{{{B_1}}}{{{B_2}}} = \frac{{d_2^3}}{{d_1^3}} = {\left( {\frac{{48\;cm}}{{24\;cm}}} \right)^3} = 8\)
PHXII05:MAGNETISM and MATTER
360636
The dipole moment of a short bar magnet is \(1.25\;A - {m^2}\). The magnetic field on its axis at a distance of 0.5 metre from the centre of the magnet is :
360635
The ratio of magnetic fields at points \(A\) and \(B\) located on axial line of a short bar magnet at 24 \(cm\) and 48 \(cm\) will be
1 3
2 8
3 \(1 / 2 \sqrt{2}\)
4 4
Explanation:
Here, \({d_1} = 24\,cm\) and \({d_2} = 48\,cm\) As, the magnet is short, \(\frac{{{B_1}}}{{{B_2}}} = \frac{{d_2^3}}{{d_1^3}} = {\left( {\frac{{48\;cm}}{{24\;cm}}} \right)^3} = 8\)
PHXII05:MAGNETISM and MATTER
360636
The dipole moment of a short bar magnet is \(1.25\;A - {m^2}\). The magnetic field on its axis at a distance of 0.5 metre from the centre of the magnet is :
360635
The ratio of magnetic fields at points \(A\) and \(B\) located on axial line of a short bar magnet at 24 \(cm\) and 48 \(cm\) will be
1 3
2 8
3 \(1 / 2 \sqrt{2}\)
4 4
Explanation:
Here, \({d_1} = 24\,cm\) and \({d_2} = 48\,cm\) As, the magnet is short, \(\frac{{{B_1}}}{{{B_2}}} = \frac{{d_2^3}}{{d_1^3}} = {\left( {\frac{{48\;cm}}{{24\;cm}}} \right)^3} = 8\)
PHXII05:MAGNETISM and MATTER
360636
The dipole moment of a short bar magnet is \(1.25\;A - {m^2}\). The magnetic field on its axis at a distance of 0.5 metre from the centre of the magnet is :
