CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

The balancing length for a cell is 560 cm in a potentiometer experiment. When an external resistance of 10 ohm is connected in parallel to the cell the balancing length changes by 60 cm. The internal resistance of the cell in ohms is
  1. 1.6 
  2. 1.4
  3. 1.2
  4. 0.12


Solution

The correct option is C 1.2

rR=l1l2l2
here R=10  ohm
l1 = 560 cm
l2 =560-60=500 cm
r=R × (l1l2l2)
=10 × (560500500)
=1.2 ohm
 

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
QuestionImage
QuestionImage
View More...


People also searched for
QuestionImage
QuestionImage
View More...



footer-image