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The field due to a wire of n turns and radius r which carries a current I is measured on the axis of the coil at a small distance h from the center of the coil. This is smaller than the field at the centre by the fraction: Figure shows three cases: in all cases [...]

A wire is bent in the form of a circular arc with a straight portion AB. Magnetic induction at O when current I flowing in the wire, is A wire is bent in the form of a circular arc with a straight portion AB. Magnetic induction at O when current I flowing in the wire [...]

Figure shows three cases: in all cases the circular part has radius r and straight one are infinetly long. For the same current the ratio of field B at centre P in the three cases B1 ; B2 : B3 is Figure shows three cases: in all cases the circular part has radius r and [...]

A current I flows through a thin wire shaped as regular polygon of n sides which can be inscribed in a circle of radius R . The magnetic field induction at the centre of polygon due to one of the polygon is A wire of length l is used to form coil . THe magnetic [...]

Two very long, straight wires carrying , currents as shown in figure. Find all locations where the net magnetic field is zero. currents as shown in figure. Find all locations where the net magnetic field is zero. straight wires carrying Two very long October 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + [...]

The magnetic field at O due to current in the infinite wire forming a loop as shown in figure is The magnetic field at O due to current in the infinite wire forming a loop as shown in figure is October 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Two long thin wires ABC and DEF are arranged as shown. They carry equal currents I as shown. The magnitude of the magnetic field at O is Two long thin wires ABC and DEF are arranged as shown. They carry equal currents I as shown. The magnitude of the magnetic field at O is October [...]

In a hydrogen-like atom an electron makes transition from an energy level with quantum number n to another with quantum number (n-1). If n>>1, the frequency of radiation emitted is proportional to In a hydrogen-like atom an electron makes transition from an energy level with quantum number n to another with quantum number (n-1). If [...]

A diatomic molecule is made of two masses m1 and m2 which are separated by a distance r. If we calculate its rotational energy by applying Bohr’s rule of angular momentum quantization, its energy will be A diatomic molecule is made of two masses m1 and m2 which are separated by a distance r. If [...]

Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission [...]