JEE Main 2019 Physics question
Two coils 'P' and 'Q' are separated by some distance. When a current of 3 A flows through coil 'P' a magnetic flux of Wb passes through 'Q'. No current is passed through 'Q'. When no current passes through 'P' and a current of 2 A passes through 'Q', the flux through 'P' is:
Answer: (C)
Solution
H; flux through P = M × 2 = Wb.