Question

Resistance of each 10$\Omega$ are connected as shown in the fig. The effective resistance between A and G is:

• A. 16$\Omega$
• B. 20$\Omega$
• C. 12$\Omega$
• D. 8$\Omega$

Answer 1

The correct option is A 16$\Omega$

The given circuit is the combination of series and parallel resistances and see the following diagrams for calculating the effective resistance between A and G.
Equivalent resistance in series connection $R_s=R_1+R_2$
Equivalent resistance in parallel connection $\frac{1}{R_p}=\frac{1}{R_1}+\frac{1}{R_2}$