Question 352: Current Electricity

Question

A wire of resistance R is bent to form a square
ABCD as shown in the figure. The effective
resistance between E and C is :
(E is mid-point of arm CD)
![](https://imagex.cdn.examgoal.net/18hoxe66ijwhsbav5/5661c41f-190b-49f2-b284-f7b806392bfa/03c06310-86c5-11e9-8081-1d558b7f1d26/file-18hoxe66ijwhsbav6.png)

Accepted Answer

${1 \over {{R_{eq}}}} = {8 \over {7R}} + {8 \over R}$
${1 \over {{R_{eq}}}} = {{8 + 56} \over {7R}};{R_{eq}} = {{7R} \over {64}}$

Answer

${7 \over {64}}R$

Answer

${1 \over {16}}R$

Answer

R

Answer

${3 \over {4}}R$

Current Electricity

A wire of resistance R is bent to form a square ABCD as shown in the figure. The effective resistance between E and C is : (E is mid-point of arm CD)

Choose the correct answer: