Two coils each of 100 turns are held such that one lies in vertical plane and the other in the horizontal plane with their centres coinciding. The radius of the vetical coil is 0.20m and that of the horizontal coil is 0.30m. How will you neutralize the magnetic field of the earth at their common centre? What is the current to be passed through each coil? Horizontal component of earth's magnetic field `=0.35xx10^-4T` and angle of dip =`30^@`.

Two circular coils, each of 100 turns, are held that one lies in the vertical plane and the other in the horizontal plane with their centres coinciding. The radii of the vertical and the horizontal coils are respectively 20 cm and 30 cm. If the directions of the currents in them are such that the earth's magnetic field at the centre of the coils is exactly neutralised, then calculate the current in each coil. (Horizontal component of earth's magnetic field =27.8 Am^(-1) , angle of dip =30^(@)

Two circular coils C_1 and C_2 each of 100 turns are held in such a way that C_1 lies in vertical plane and the other C_2 in the horizontal plane, with their centres coinciding. The radii of the coils are r_1=20cm and r_2=30cm . The directions of currents I_1 and I_2 passed through the two coils are such that earth's magnetic field at the common centre is neutralised completely. If H=27*8Am^-1 and angle of dip is 30^@ . Calculate the values of I_1 and I_2 .

Is the magnetic field at the centre of the current carrying circular coil parallel to the plane of the coil?

A compass needle free to turn in a horizontal plane is placed at the centre of circular coil of 30 turns and radius 12 cm. The coil is in a vertical plane making an angle of 45^@ with the magnetic meridian. When the current in the coil is 0.35 A, the needle points west to east. Determine the horizontal component of the earth’s magnetic field at the location.

A compass needle free to turn in a horizontal plane is placed at the centre of a circular coil of 30turns and radius 12cm. The coil is in a vertical plane malting an angle of 45^(@) with the magnetic meridian when the current in the coil is 0.35A, the needle points west to east. Determine the horizontal component of earth's magnetic field at the location.

A compass needle free to turn in a horizontal plane is placed at the centre of a circular coil of 30turns and radius 12cm. The coil is in a vertical plane malting an angle of 45^(@) with the magnetic meridian when the current in the coil is 0.35A, the needle points west to east. Determine the horizontal component of earth's magnetic field at the location.