Figure-5.136 shows two coaxial coils of radii r and R `(R gt gt r)` kept at large separation x`(x gt gt R)`. Calculate the magnetic flux passing through coil A due to a current I in coil B.

There is one conducting circular loop of radius R, which carries current I. There is another conducting circular loop of radius r placed coaxially at a distance x from it. Here r lt lt R and x gt gt R . Magnetic flux linked smaller coil due to current in bigger coil is

Figure shows two concentric loops of radii R and r (R gtgt r). A current i is passed through the outer loop. Find the flux linked with inner loop and the mutual inductance of the arrangement.

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.

A current-carrying coil of total resistance R is kept inside magnetic field. How is the change in magnetic flux through the coil related to the amount of charge passing through the coil ?

A current coil of total resistance R is kept inside magnetic field. How is the change in magnetic flux through the coil related to the amount of charge passing through the coil?

A coil of N turns and radius R carries a current I. It is unwound and rewound to make another coil of radius R//2 , current remaining the same. Calculate the ratio of magnetic moments of the new coil and the original coil.

Two circular coils of radii a and b ( a gt b ) are put in the vicinity of each other. The coefficient of mutual induction for the pair of coils is 0.5 mH. Calculate the flux linked with the larger coil when a current of 1 A flows through the smaller one. What happens when current in smaller coil suddenly falls to zero?