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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A long solenoid with circular cross section of radius r1 and n turns per unit length is inside and coaxial with a short coil with circular cross section section of radius r2 and N turns. The current in the solenoid is increased ata constant rate from zero to i over a time interval of T. Find the mutal indutance betwwen the two coils and the potential difference induced in the short coil while the current is changing.

A long solenoid with circular cross section of radius r1 and n turns per unit length is inside and coaxial with a short coil with circular cross section section of radius r2 and N turns. The current in the solenoid is increased ata constant rate from zero to i over a time interval of T. Find the mutal indutance betwwen the two coils and the potential difference induced in the short coil while the current is changing.

and in receiving signals in television cable systems. Model a long coaxial cable as a thin Coaxial cables are often used to connect electrical devices cylinder of radius a as in figure. The conductors carry the same current I in opposite directions. calculate the inductance L of a length l of this cable. such as your video system