wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Two cells of emf E1 and E2 (E1,>E2) are connected as shown in figure. When a potentiometer is connected between A and B, the balancing length of the potentiometer wire is 300cm. When the same potentiometer is connected between A and C, the balancing length is 100cm. The ratio of E1 and E2 is
214053.jpg

A
3 : 2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
4 : 3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
5 : 4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
2 : 1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 3 : 2
For balance potentiometer : EabEac=lablac
or E1E1E2=300100
or 3E13E2=E1
or 2E1=3E2 or E1/E2=3/2
or E1:E2=3:2

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Electrical Instruments
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon