Part 2

Two similar coils are kept mutually perpendicular such that their centres coincide. At the centre, find the ratio of the magnetic field due to one coil and the resultant magnetic field by both coils, if the same current is flown. find the ratio of the magnetic field due to one coil and the resultant magnetic [...]

Two concentric coplanar circular loops of radii r1 and r2 carry currents of respectively i1 and i2 in opposite direction (one clockwise and the other anticlockwise). The magnetic induction at the centre of the loops is half that due to i1 alone at the centre. if r2 = 2r1. the value of i2/i1 is The [...]

Two identical coils have a common centre and their planes are at right angles to each other. They carry equal currents. If the magnitude of the magnetic field at the centre due to one of the coils is B then that due to the combination is The magnetic field at O is November 18, 2021 [...]

Two concentric coils carry the same current in opposite directions. The diameter of the inner coil is equal currents. The outer coil. If the magnetic field produced by the outer coil at the common centre are 1 T, the net field at the centre is The magnetic field at O is November 18, 2021 Category: [...]

A length of wire carries a steady current I. It is bent first to form a circular plane coil of one turn. The same length is now bent more sharply to give double loop of smaller radius. The magnitude field at the centre caused by the same current is The magnetic field at O is [...]

The value of i so that magnitude at R is zero The value of i so that magnitude at R is zero November 18, 2021 Category: Cengage NEET by C.P Singh , Chapter 5 - Magnetic Field , Part 2 ,

A straight wire of length π^2 meter is carrying a current of 2A and the magnetic field due to it is measured at a point distance 1 cm from it. If the wire is to be bent into a circle and is to carry the same current as before, the ratio of the magnetic field [...]

Two long straight wires, each carrying a current I, are separated by a distance R. If the current are in opposite directions, then the strength of the magnetic field at a point midway between the two wires is are separated by a distance R. If the current are in opposite directions each carrying a current [...]

A charge q is coulomb are circulating in an orbit of a radius r meter making n revolutions per second. The magnetic field produced at the centre of the centre of the circle is N/Am are A charge q is coulomb are circulating in an orbit of a radius r meter making n revolutions per [...]

If we double the radius of a coil keeping the current through it unchanged, then the magnetic field at any point at a large distance from the centre becomes approximately If we double the radius of a coil keeping the current through it unchanged then the magnetic field at any point at a large distance [...]