Two batteries A and B each of e.m.f. 2 V...

Two batteries A and B each of e.m.f. 2 V are connected in series to an external resistance R = 1 ohm . If the internal resistance of battery A is 1.9 ohms and that of B is 0.9 ohm , what is the potential difference between the terminals of battery A

3.8V

Zero

None of the above

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

CURRENT ELECTRICITY
ERRORLESS |Exercise Kirchhoff s Law, cells|8 Videos
CURRENT ELECTRICITY
ERRORLESS |Exercise Different Measuring Instruments|1 Videos
COMMUNICATION SYSTEM
ERRORLESS |Exercise S E T|14 Videos
ELECTRO MAGNETIC INDUCTION
ERRORLESS |Exercise SET|20 Videos

Similar Questions

Explore conceptually related problems

Two batteries A and B whose emf is 2V are connected in series with external resistance R=1Omega . Internal resistance of battery A is 1.9Omega and that of B is 0.9 Omega .

Two cells A and B each of 2 V are connected in series to an external resistance R=1 ohm.The internal resistance of A is r_(A)=1.9 ohm and B is r_(B)=0.9 ohm. Find the potential difference between the terminals of A .

In the above question, if the internal resistance of the battery is 1 ohm , then what is the reading of ammeter

A battery of emf 2 volts and internal resistance 0.1 ohm is being charged with a current of 5 amps. In what directions will the currents flow inside the battery? What is the potential difference between the two terminal of the battery?

Four cell each of emf 2 V and internal resistance 1 ohm are connected n parallel with an external resistance of 6 ohm. The current in the external resistance is

A 4 m long wire of resistance 8Omega is connected in series with a battery of emf 2V and a resistor of 7Omega . The internal resistance of the battery is 1Omega . What is the potential gradient along the wire ?

A car battery with a 12V e.m.f. and an internal resistance of 0.04 Omega is being charged with a current of 50A. The potential difference V across the terminals of the battery are:

A battery of EMF E produces currents 4 A and 3 A when connected to external resistance 1 Omega and 2 Omega respectively. The internal resistance of the battery is

ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19

Two batteries A and B each of e.m.f. 2 V are connected in series to a...
Text Solution
|
Figure 6.51 shows a simple a potentiometer circuit for measuring a sma...
Text Solution
|
A car has a fresh storage battery of emf 12 V and internal resistance ...
Text Solution
|
If the balance point is obtained at the 35th cm in a metre bridge the ...
Text Solution
|
The equivalent resistance across the terminals of source of e.m.f. 24 ...
Text Solution
|
In the circuit shown in figure, switch S is initially closed and S i...
Text Solution
|
The figure here shows a portion of a circuit. What are the magnitude a...
Text Solution
|
A carbon resistor has colour strips as violet, yellow brown and golden...
Text Solution
|
A voltmeter of resistance 1000 Omega is connected across a resistance ...
Text Solution
|
A beam contains 2 xx 10^(8) doubly charged positive ions per cubic cen...
Text Solution
|
In the circuit shown, the reading of ammeter when switch S is open ...
Text Solution
|
In the circuit as shown in figure the
Text Solution
|
In figure shows a rectangular block with dimensions x , 2 x and 4 x ....
Text Solution
|
A battery is connected to a uniform resistance wire AB and B is eart...
Text Solution
|
A cylindrical metal wire of length l and cross sections area S , has...
Text Solution
|
A potential divider is used to give outputs of 4 V and 8 V from a 12 V...
Text Solution
|
Find equivalent resistance between A and B
Text Solution
|
Following figures show four situations in which positive and negative ...
Text Solution
|
A and B are two square plates of same metal and same thickness but len...
Text Solution
|
A moving coil galvanometer is converted into an ammeter reads upto 0.0...
Text Solution
|
Two conductors are made of the same material and have the same length....
Text Solution
|