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NEET Exam Model Paper 7

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Question : 45

Total: 180

Two cells of emf ε1 and ε2(ε1>ε2) are connected as shown in figure. When a potentiometer is connected between A and B, the balancing length of the potentiometer wire is 300 cm. on connecting the same potentiometer between A and C, the balancing length is 100 cm. The ratio ε1:ε2 is

3.:1
1:3
2:3
3:2

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