A small square loop of wire of side l is placed inside a large square loop of wire of side L(L>>l) .The loops are coplanar and their centers coincide.The mutual inductance of the system

A circular loop of radius 0.3 cm lies parallel to amuch bigger circular loop of radius 20 cm. The centre of the small loop is on the axis of the bigger loop. Obtain the mutual inductance of the two loops.

Two concentric circular loops of radii 1 cm and 20 cm are placed coaxially. Find mutual inductance of the arrangement.

A long solenoid of 10 turns / cm has a small loop of area 1 sq. cm placed inside with the normal of the loop parallel to the axis. Calculate the placed across the small loop if the current in the solenoid is changed from 1 A to 2 A in 0 .1 s, during the duration of this change.

A rectangular loop of wire of size 4 cm xx 10 cm carries a steady current of 2A. A straight long wire carrying 5A current is kept near the loop If the loop and the wire are coplanar, find (i) the torque acting on the loop and (ii) the magnitude and direction of the force on the loop due to the current carrying wire(fig).

A current I=3.36 (1+2t)xx 10^-2 A increases at a steady rate in a long straight wire. A small circular loop of radius 10^-3 m has its plane parallel to the wire and is at a placed at a distance of 1 m from the wire. The resistance of the loop is 8.4 xx 10^-4 Omega . find the megnitude and the direction of the induced current in the loop.

A square wire of side 3 cm is placed 25 cm away from a concave mirror of focal length 10 c.What is the area enclosed by the imge of the wire?(The entre of the wire is on teh axis of he mirror,with its two sides normal to he axis).

Four point charges Q, q, Q and q are placed at the corners of a square of side 'a' as shown in the figure. Find the potential energy of this system?

A wire is in the form of a circle of radius 42 cm. It is converted into a square. Find the side of the square.

A conducting square loop of side L and resistance R moves in its plane with a unifrom velocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane of the loop exists every where. the current induced in the loop is

A square-shpaed current carrying loop MNOP is placed near a straight long current carrying wire AB as shown in the figure. The wire and the loop lie in the same plane. If the loop experineces a net force F towards the wire. Find the magnitude of the force on the side 'NO' of the loop.