Question 702: Current Electricity

Question

When a wire of uniform cross-section $$a$$ length $$l$$ and resistance R is bent into a complete circle. resistance between any two of diametrically opposite points will be

Accepted Answer

$${R_{eq}} = {{{R_1}{R_2}} \over {{R_1} + {R_2}}} = {{\left( {{R \over 2}.{R \over 2}} ight)} \over {{R \over 2} + {R \over 2}}}$$
$$ 	herefore $$ $${R_{eq}} = {R \over 4}$$

Answer

R/4

Answer

4R

Answer

R/8

Answer

R/2

Current Electricity

When a wire of uniform cross-section $a length l$ and resistance R is bent into a complete circle. resistance between any two of diametrically opposite points will be

Choose the correct answer: