Question

What is the minimum resistance that one can obtain by connecting all the five resistances each of $0.5\Omega$?

• A. $\frac{1}{10}\Omega$
• B. $\frac{1}{5}\Omega$
• C. $\frac{1}{50}\Omega$
• D. $\frac{1}{25}\Omega$

Answer 1

The correct option is A $\frac{1}{10}\Omega$

Given $R=0.5=\frac{1}{2}\Omega$

For obtaining minimum resistance, all five resistances should be connected in parallel.

And the equivalent resistance =$\frac{R}{5}$

$=\frac{0.5}{5}=\frac{1}{10}\Omega$

Answer-(A)