Two similar coils have self-inductance of 20 mH each. Coefficient of coupling is 0.4. The mutual inductance M is ______________
A. 2.5 mH
B. 8 mH
C. 7 mH
D. 1 mH
Answer:B
Two similar coils have self-inductance of 20 mH each. Coefficient of coupling is 0.4. The mutual inductance M is ______________
A. 2.5 mH B. 8 mH C. 7 mH D. 1 mH