Question

In the figure given, calculate the resistance between X and Y.

Answer 1

Answer:

$r \: eff = 34.75 \: ohms \:$

$15 \: ohm \: 5 \: ohm \: 10 \: ohm \: resistor \: are \: in \: series \:$

$r1 = 15 + 10 + 5 =30\: ohms$

$r1 \: is \: parallel \: to \: 50 \: ohm \: resistor \\ so \: 1 \div r2 = 1 \div 50 + 1 \div r1 \\ r2 = r1 \times 50 \div r1 + 50 \\ r2 = 30 \times 50 \div 30 + 50 \\ r2 = 18.75$

$r2 \: is \: series\: in \: both \: 8 \: ohms \: resistor \\ so \: r \: eff \: = 8 + 8 + r2 = 16 + 18.75 = 34.75 \: ohms \:$