If the extension in both the springs increases from x to `x_0` on flowing current I in the rod from B to A then, the value of magnetic field will be -

Same current I flows in both wires. I is uniformly distributed over area. Graph of magnetic field

A wider conductor strip of width x is bent into a slender tubing of radius r with its two ends forming two plane extensions. A current I flowing through it gives magnetic field in tubular portion given by

In a current carrying solenoid, current is flowing clockwise from left end. Draw the magnetic field produced in it.

In the figure shown a semicircular wire loop is placed in a uniform magnetic field B=1.0T . The plane of the loop is perpendicular to the magnetic field. Current i=2A flows in the loop in the directions shown. Find the magnitude of the magnetic force in both the cases a and b . The radius of the loop is 1.0 m

In the figure shown a semicircular wire loop is placed in a uniform magnetic field B=1.0T . The plane of the loop is perpendicular to the magnetic field. Current i=2A flows in the loop in the directions shown. Find the magnitude of the magnetic force in both the cases a and b . The radius of the loop is 1.0 m

In the figure shown a semicircular wire loop is placed in a uniform magnetic field B=1.0T . The plane of the loop is perpendicular to the magnetic field. Current i=2A flows in the loop in the directions shown. Find the magnitude of the magnetic force in both the cases a and b . The radius of the loop is 1.0 m

A straight conductig rod PQ is executing SHM in xy-plane from x=-d to x=+d. Its mean position is x=0 and its length is along y -axis. There exists a uniform magnetic field B from x=-d to x=0 pointing inward normal to the paper andfrom x=0 to x=+d there exists another uniform magnetic field of same magnetic B but pointing outward normal to the plane of the paper. At the instant t=0 , the rod is at x=0 and moving to the right. The induced emf (epsilon) acorss the rod PQ vs time ( t ) graph will be