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Two cells of emf 1 volt and 2 volt and internal resistance is 2 ohms and one ohm are connected in series. what should be the external resistance in the circuit so that the current through the resistance be the same.?
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Two cells of emf 1 volt and 2 volt and internal resistance is 2 ohms a...
In series effective emf =2+1=3V
effective internal resistance =2+1=3ohm 
total resistance =3+R ohm 
where R=external resistance
current through the circuit=current through the external resistance =3/3+R ampere 
in parallel effective emf =2V
effective resistance =2/3ohm 
total resistance =2/3+R. ohm
current through the external resistance
=2/(2/3+R) Ampere
in two cases current is same 
then solving two equation we get R=4ohm
as in series connection resistance is more so heat will generate more in series connection 
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Two cells of emf 1 volt and 2 volt and internal resistance is 2 ohms and one ohm are connected in series. what should be the external resistance in the circuit so that the current through the resistance be the same.?
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Two cells of emf 1 volt and 2 volt and internal resistance is 2 ohms and one ohm are connected in series. what should be the external resistance in the circuit so that the current through the resistance be the same.? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Two cells of emf 1 volt and 2 volt and internal resistance is 2 ohms and one ohm are connected in series. what should be the external resistance in the circuit so that the current through the resistance be the same.? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two cells of emf 1 volt and 2 volt and internal resistance is 2 ohms and one ohm are connected in series. what should be the external resistance in the circuit so that the current through the resistance be the same.?.
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