c T T d I 1 2 A wire of resistance 42 is used to wind a coil

Last updated: 6/10/2023

c T T d I 1 2 A wire of resistance 42 is used to wind a coil of radius 7 cm The wire has a diameter of 1 4 mm and the specific resistance of its material is 2 x 107 22 m The number of turns in the coil is a 50 b 40 c 60 d 70