Question

Phy. 0 q. Is .How can three resistans each of 9 ohm be connected to given a total resistance of (a) 13.5 ohm (b) 6ohm know i want solution

Answer 1

Connect one 9 ohm resistor in series with a combination of 2 9 ohm resistors connected in parallel to each other..

Resistance of 2 resistors in parallel = 4.5 ohms

Final resistance = 9+4.5 = 13.5 ohms

For second,

Combine 2 9 resistors in series…total resistance = 18 ohms

Connect this combination in parallel with third 9 ohm resistor…

Net resistance = 1/(1/9+1/18) = 1/(3/18) = 6 ohms