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Grade 12Electric Current

Two cells of emf ε1 and ε2 (ε2 1) are joined as shown in figure attached


now,
When a potentiometer is connected between x and y it balances for 300 cm length against ε1. On connecting the same potentiometer between x and z it balances for 100 cm length against ε1 and ε2. Then the ratio is :

Question image for Two cells of emf ε 1 and ε 2 (ε 2 1 ) are joined a
Profile image of AKSHAY CHAUHAN
11 Years agoGrade 12
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1 Answer

Profile image of Aziz Alam
11 Years ago
According to potentiometer’ working,

V1/V2=L1/L2
V1=E1& V2=E1-E2
E1/E1-E2=300/100
=>E1/E2=3:2

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