69 A solenoid of length 30 cm with 10 turns per centimetre

Last updated: 6/10/2023

69 A solenoid of length 30 cm with 10 turns per centimetre and area of cross section 40 cm completely surrounds another co axial solenoid of same length area of cross section 20 cm with 40 turns per centimetre The mutual inductance of the system is a 10 H c 3 mH 70 A circular coil with a cross sectional area of 4 cm b 8 H d 30 mH 75 D in c 76 If se