Question

The maximum resistance which can be made using four resistor each of resistance 1/2 is
(A) 2
(B) 1
(C)2.5
(D)8

Answer 1

Maximum resistance is by putting them into series.

Rs=1/2+1/2+1/2+1/2

=2 ohms

Answer 2

Answer:

(D)8ohms

Explanation:

Resistance in parallel = 1/R1+1/R2+1/R3+1/R4

Rp=1/ 1/2 + 1/ 1/2 + 1/ 1/2 + 1/ 1/2

Rp= 2+2+2+2

Rp=8ohms

So option D is correct.