Question

A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2, then the ratio R1/R2 is :
(a) 1/25
(b) 1/5
(c) 5
(d) 25​

Answer 1

Answer:

each resistance after becoming cut= R1/5

1/R2=5/r1/5=25/R1

R1/R2=25