Question

for circuit 1 ohm resistors state how they must be connected to give overall resistance of a)1/2 ohm b) 1 ohm c) 4/3 ohm d) 5/2 ohm all four resisters are being connected in each case

Answer 1

a) to get a equivalent resistance of 1/2 ohm is not possible when all 4 resistors are being used.

b) two resistors each are connected in parallel and the two pairs of parallel resistors are in series.

1/2 + 1/2 = 1

c) three resistors are in parallel to each other and their equivalent is in series with the fourth resitor.

1/3 + 1 = 4/3

d) 2 resistors are in parallel and the othr two are in series .

1 +1 + 1/2 = 5/2

Answer 2

Answer:

a)All are connected parallel.

b)Pairs are parallel but these pairs are in series.

c)Three are connected in parallel but the fourth one is series connection.

d)Two are connected in parallel but other are in series.