Two concentric circular coils with radii 1cm and 1000cm, and number of turns 10 and 200 respectively are placed coaxially with centres coinciding.The mutual inductance of this arrangement will be ______ `xx10^-8` H.

Two circular coils, one of smaller radius r_(1) and the other of very large radius r_(2) are placed co-axially with centres coinciding. Obtain the mutual inductance of the arrangement.

(a) Explain the meaning of the term mutual inductance. Consider two concentric circular coils, one radius r_(1) and the other of radius r_(2)(r_(1) lt r_(2)) placed coaxially with centres coinciding with each other. Obtain the expression for the mutual inductance of the arrangement. (b) A rectangular coil of area A , having number of turns N is rotated at 'f' revoluation per second in a uniform magnetic field B , the field being perpendicular to the coil. Prove that maximum emf induced in the coil is 2pifNBA .

Two concentric circular coils of radius r and R are placed coaxially with centres coinciding If R gt gt r then calculate the mutual inductance the coils.

Two co-axial circular coils of radii 50 cm and 5 cm are separated by a distance of 50 cm and carry currents 3 A and 2 A respectively. Calcualte the mutual inductance of the two coils.

Two circular coils of radii 10 cm and 40 cm and equal number of turns are connected in series to a battery. The ratio of magnetic fields at their centres is

Two conducting circular loops of radii R_1 and R_2 are placed in the same plane with their centres coinciding. If R_1 >> R_2 the mutual inductance M between them will be directly proportional to

If number of turns in primary and secondary coils is increased to two times each, the mutual inductance

Two circular loops of radius r and R ( R gt gt r ) are placed coaxially with their centres coinciding. What will be the mutual inductance for the pair? If one of the coils is rotated through 90^(@) angle, then what will be the new mutual inductance?