1.

8. A wire whose resistance is 40 is cut intothree pieces of equal lengths which are thenjoined in parallel. Calculate the resistanceof the combination​

Answer»

Explanation: LENGTH is directly PROPORTIONAL to resistance so when the wire is cut into 3 parts the resistance ALSO becomes 1 by 3 TIMES therefore the resistance of each SMALL part is 40/3

As they are connected in parallel effective resistance =40/3/3=40/9

I hope that the answer is clear.............



Discussion

No Comment Found

Related InterviewSolutions