Question

Three resistors are connected to form the sides of a triangle $ABC$ as shown below
The resistance of side $AB$ is $40\Omega$, of side $BCis60\Omega$ and of side $CAis100\Omega$. The effective resistance between the point $A$ and $B$ in ohms is:

• A. 50
• B. 64
• C. 32
• D. 100

Answer 1

The correct option is C 32

Equivalent resistance between A and B $R_{AB}=(100+60)\parallel 40=160\parallel 40$ $\Omega$

$\therefore$ $R_{AB}=\frac{160\times 40}{160+40}=32\Omega$