Question

Given the resistance of 1 ohm,2 ohm,3 ohm .How will you combine them to get an equivalent resistance of (1)11/3 ohm (2)11/5 ohm ?

Answer 1

HI PAL,

HERE WE GO

YOUR ANSWER

1) Look , you need 3 to be at denminator so connect 2 ohm and 1 ohm in parallel and 3 ohms in series.

2) You need 5 to be at the denominator so connect 2ohm and 3ohm in parallel and 1 ohm in series.

HOPE IT'S HELPFUL

Answer 2

Given : The resistance of 1 ohm, 2ohm , 3 ohm.

To find : How will you combine them to get an equivalent resistance of (1) 11/3 ohm (2) 11/5 ohm.

solution : see 1st figure, if 1 ohm and 2 ohm are joined in parallel combination and then this system is connected in series with 3 ohm, we get equivalent resistance 11/3 ohm.

as , Req = 1/(1/1 + 1/2) + 3 = 2/3 + 3 = 11/3 ohm

see 2nd figure, if 2ohm and 3 ohm are joined in parallel combination and then this system is joined in series with 1 ohm, we get equivalent resistance 11/5 ohm.

as Req = 1/(1/2 + 1/3) + 1 = (2 × 3)/(2 + 3) + 1

= 6/5 + 1 = 11/5 ohm