Q. There are three resistance coils of equal resistance. The maximum number of resistances you can obtain by connecting them in any manner you choose, being free to use any number of the coils in any way is
A) 3
B) 4
C) 6
D) 5
Explanation
(b) Maximum number of resistances $= 2^{n - 1} = 2^{3 - 1} = 4$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.