Search any question & find its solution
Question:
Answered & Verified by Expert
A wire of resistance $10 \Omega$ is bent to form a complete circle. Find its resistance between two diametrically opposite point.
Options:
Solution:
2812 Upvotes
Verified Answer
The correct answer is:
$2.5 \Omega$
The wires $A D C$ and $A B C$ will have resistance $5 \Omega$ each. These two are joined in parallel between $A$ and $C$. The equivalent resistance $R$ between $A$ and $C$ is, therefore given by
$R=\frac{5 \Omega \times 5 \Omega}{5 \Omega+5 \Omega}=2.5 \Omega$
$R=\frac{5 \Omega \times 5 \Omega}{5 \Omega+5 \Omega}=2.5 \Omega$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.