Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)

At a given place horizontal and vertical components of the earth’s magnetic field BH and BV are along X and Y-axes, respectively, as shown in the figure. What is the total flux of the earth’s magnetic field associated with an area S, if the area S is in the (i) XY-plane (ii) YZ-plane (iii) X-Z [...]

A circular loop of radius a, carrying a current i, is placed in a two – dimensional magnetic field. The center of the loop coincides with the center of the field. The strength of the magnetic field at the periphery A circular loop of radius a carrying a current i is placed in a two [...]

If δ 1 ​ and δ 2 ​ are the angles of dip observed in two vertical planes at right angles to each other and δ is the true value of dip If δ 1 ​ and δ 2 ​ are the angles of dip observed in two vertical planes at right angles to each [...]

In figure, a semicircular wire loop is placed in uniform magnetic field B = 1.0 T. The plane of the loop is perpendicular to the magnetic field. Current i = 2 A flows in the loop in the direction shown. Find the magnitude of the A square loop of edge 1 and carrying a current [...]

A square loop of edge 1 and carrying a current i, is placed with its edges parallel to the xy axes. There is present a non-uniform magnetic field in the region A square loop of edge 1 and carrying a current i is placed with its edges parallel to the xy axes. There is present [...]

A circular of radius 0.157 m has turns. It is placed such that its axis is in magnetic meridian. A dip needle is supported at the centre of the coil with its axis of rotation horizontal, and in the plane of the coil. The angle of dip is 30∘ when a current flows through the [...]

Figure (a) shows a rod PQ of length 20 cm and mass 200 g suspended through a fixed point O by two threads of lengths 20 cm each. A magnetic field of strength 0.500 T exists in the vicinity of the wire PQ as shown A metal wire PQ of mass 10 g lies at [...]

A small magnet of magnetic moment M is placed at broad side on position of a magnet of magnetic M’, length 2l’ in such a way that the axis of former coincides with the perpendicular bisector of the latter. The separation between their centres is d. Calculate the nature of interaction (force or couple ) [...]

A metal wire PQ of mass 10 g lies at rest on two horizontal metal rails separated by 5 cm. A vertically downward magnetic field of magnitude 0.800 T exists in the space. The resistance of the circuit A metal wire PQ of mass 10 g lies at rest on two horizontal metal rails separated [...]

A closely wound solenoid of 1000 turns and area of cross-section 2.0×10^−4 m^2, carrying a current of 2.0 A. It is placed with its horizontal axis at 30∘ with the direction of a uniform horizontal magnetic field of 0.16 T, as shown in Fig. (a) What is the torque experienced by the solenoid due to [...]