A 2 volt battery, a15Ωresistor and a potentiometer of 100 cm length, all are connected in series. If the resistance of potentiometer wire is 5Ω, then the potential gradient of the potentiometer wire is
A
0.005 V/cm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
0.05 V/cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
0.02 V/cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
0.2 V/cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A0.005 V/cm By using x=e(R+Rh+r).RL⇒x=2(5+15+0)×51=0.5V/m=0.005V/cm