Home
Class 12
PHYSICS
A battery of emf epsilon0=10V is connect...

A battery of emf `epsilon_0=10V` is connected across a `1m` long uniform wire having resistance `10Omega//m.` Two cells of emf `epsilon_1=2V` and `epsilon_2=4V` having internal resistance `1Omega` and `5Omega` respectively are connected as shown in the figure. If a galvanometer shows no deflection at the point `P`, find the distance of point `P` from the point `a`.

Text Solution

Verified by Experts

The correct Answer is:
`46.67 cm`
`E_(eq)=(E_(1)r_(2)+E_(2)r_(1))/(r_(1)+r_(2))=(10+4)/(5+1)=7/3` volt
`E_(eq)x.l implies 7/3=10/(10+10)xx10xxl`
`l=700/(3xx5)m=46.67 cm`
Promotional Banner

Similar Questions

Explore conceptually related problems

A battery of emf E_0=12V is connected across a 4 m long uniform wire having resistance 4Omega//m . The cell of small emfs epsilon_1=2V and epsilon_2=4V having internal resistance 2Omega and 6Omega respectivley are connected as shown in the figure. If galvanometer shows no diflection at the point N the distance of points N from the point A is equal to

A battery of emf E_(0) = 12 V is connected across a 4 m long uniform wire having resistance (4 Omega)/(m) . The cells of small emfs epsilon_(1) = 2 V and epsilon_(2) - 4 V having internal resistance 2 Omega and 6 Omega respectively, are connected as shown in the figure. If galvanometer shows no deflection at the point N , the distance of point N from teh point A is equal to

Two batteris of emf epsilon_(1) and epsilon_(2) wit respective internal resistance r_(1) and r_(2) are connected in parallel. Now

Two batteries of emfs 2 V and 1 V of internal resistances 1Omega and 2Omega respectively are connected in parallel. The effective emf of the combination is

Two batteries of emf epsilon_(1) and epsilon_(2) (epsilon_(2)gtepsilon_(1) and internal resistances r_(1) and r_(2) respectively are connected in parallel as shown in Fig. 2 (EP).1.

A circuit consists of three bateries of emf E_(1) = 1V, E_(2)=2V and E_(3)=3V and internal resistance 1Omega, 2Omega and 1Omega respectively which are connected in parallel as shown in figure. The potential difference between points P and Q is