The potentiometer wire AB is 100 cm long. The value of R for which the galvanometer shown no deflection, when AC = 40cm shown in figure is
13Ω
17Ω
15Ω
21Ω
A
17Ω
B
13Ω
C
15Ω
D
21Ω
Open in App
Solution
Verified by Toppr
The condition of no deflection of galvanometer : 10R=ACBC=40100−40=23⇒R=15Ω
Was this answer helpful?
0
Similar Questions
Q1
The potentiometer wire AB is 100 cm long. The value of R for which the galvanometer shown no deflection, when AC = 40cm shown in figure is
View Solution
Q2
In the given potentiometer circuit, length of the wire AB is 3m and resistance R=4.5Ω. The length AC for no deflection in galvanometer is
View Solution
Q3
The potentiometer wire AB, shown in fig, is 50cm long. When AD=30cm, no deflection occurs in the galvanometer. The value of ′R′ is:
View Solution
Q4
The potentiometer wire AB shown in figure (32 - E27) is 50 cm long. When AD = 30 cm, no deflection occurs in the galvanometer. Find R
View Solution
Q5
A potentiometer wire AB is 100cm long and has a total resistance of 10Ω. if the galvanometer shows zero deflection at the position C, then find the value of unknown resistance R.