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Assume the dipole model for earth’s magnetic field B which is given by BV = vertical component of magnetic field = `μ_0 /(4π) (2mcosθ )/r^3 ` BH = Horizontal component of magnetic field = `μ_0 /(4π) (sinθm)/r^3 ` θ = 90° – lattitude as measured from magnetic equator. Find loci of points for which

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Consider the plane S formed by the dipole axis and the axis of earth. Let P be point on the magnetic equator and in S. Let Q be the point of intersection of the geographical and magnetic equators. Obtain the declination and dip angles at P and

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There are two current carrying planar coils made each from identical wires of length L. C1 is circular (radius R ) and C2 is square (side a). They are so constructed that they have same frequency of oscillation when they are placed in the same uniform B and carry the same current. Find a in terms of

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A natural bar

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The relation between the magnetic length `(L_e)` and the geometric length `(L_g)` is best represented

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Two magnets have the same length and the same pole strength. But one of the magnets has a small hole at its centre.

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Magnetic lines of force due to a bar magnet do not intersect,

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If the magnet is cut into four equal parts, such that their lengths and breadths are equal, then pole strength of each part

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A bar magnet of magnetic moment `M_1` is axially cut into two equal parts. If these two pieces are arranged perpendicular to each other, the resultant magnetic moment is `M_2`, then the value of `M_1'/'M_2`

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Electron is revolving around a nucleus in circular orbit of radius `1 A` with a speed `4 xx 10^4` m/s. Magnetic moment produced due to rotation of electron

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Magnetic moment of an electron in the first orbit

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Which of the following expression represents the relation between orbital magnetic moment and orbital angular momentum of an

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An electron of charge `e` moves in a circular orbit of radius `r` around the nucleus at a frequency `v`. The magnetic moment associated with the orbital motion of the electron

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Which of the following point lies in the region of highest magnetic field strength

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At the same place, the horizontal component of earth’s magnetic field is 0.40 G and the angle of dip is 30°. What is the resultant magnetic

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The relations amongst the three elements of earth’s magnetic field namely : horizontal component `H_e` vertical component `V_e` and angle of dip `delta` are (`B_e` = total magnetic

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The angle of dip at a certain place on the earth is 60° and the magnitude of the earth’s horizontal component of magnetic field is 0.26 G. The magnetic field at the place on the earth

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At a place in magnetic meridian, magnetic needle bends 30° from horizontal. If earth’s magnetic field at this place is 2 G, then vertical component and horizontal component of earth’s magnetic field respectively,

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Angle of dip is maximum

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A current loop behaves as a system of ...................As a result, it acts like an magnetic

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