Question

Calculate the equivalent resistance between points P and q
(A) 8.33 ohm
(B) 4.25 ohm
(C) 20 ohm
(D)2 ohm​

Answer 1

The equivalent resistance is...

$\frac{1}{r} = \frac{1}{5+3} + \frac{1}{8} + \frac{1}{3+1} = \frac{1}{4} + \frac{1}{4} = \frac{1}{2} \\ = > r = 2$

option (d)2 ohm

Answer 2

Answer

2ohm

Explanation in detain

Given data .

• two resistance 5 ohm and 3ohm are in series .

=>Rs = R1 + R2

=>Rs = 5ohm + 3ohm

=>Rs = 8ohm

• Resistance 1 ohm and 3 ohm are in series .

=>Rs = R1 + R2

=>Rs = 1ohm + 3ohm

=>Rs = 4ohm

• Now 3 resistance 8ohm ,8ohm and 4ohm are in Parallel

=>1/Rp = 1/8 ohm + 1/8 ohm + =>1/4 ohm

• LCM of 4,8and 8 is 8

=>1/Rp = (1+1+2)/8ohm

=>1/Rp = 4/8ohm

=>Rp = 2ohm

so

Equivalent resistance = 2ohm

• Used word Above means

1. Rs = Resistance in series .
2. Rp = Resistance in Parallel.