Physics · 2013
JEE Main · 25 April 2013, Shift 1 · Q14
The earth's magnetic field lines resemble that of a dipole at the centre of the earth. If the magnetic moment of this dipole is close to 8 × 10^22…
The earth's magnetic field lines resemble that of a dipole at the centre of the earth. If the magnetic moment of this dipole is close to $\displaystyle 8 \times 10^{22} \mathrm{Am}^2$, the value of earth's magnetic field near the equator is close to (radius of the earth $\displaystyle =6.4 \times 10^6 \mathrm{~m}$ )
Official answer
(4)
0.$\displaystyle 32$ Gauss
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.