wiz-icon
MyQuestionIcon
MyQuestionIcon
9
You visited us 9 times! Enjoying our articles? Unlock Full Access!
Question

A daniel cell is balanced on 125 cm length of a potentiometer wire. When the cell is short circuited with a 2Ω resistance, the balancing length obtained is 100 cm. Internal resistance of the cell will be

A
1.5Ω
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.5Ω
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
1.25Ω
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
45Ω
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 0.5Ω
By using r=l1l2l2×Rr=125100100×2=12=0.5Ω

flag
Suggest Corrections
thumbs-up
8
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electrical Instruments
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon