In order to measure the internal resistance r₁ of a cell of emf E, a meter bridge o R₁50 92, a resistance R/2, another cell of emf E/2 (internal resistance r) and a are used in a circuit, as shown in the figure. If the null point is found at /=72 cm, r₁ S2.
In order to measure the internal resistance r₁ of a cell of emf E, a meter bridge o R₁50 92, a resistance R/2, another cell of emf E/2 (internal resistance r) and a are used in a circuit, as shown in the figure. If the null point is found at /=72 cm, r₁ S2.
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Transcribed Image Text:17. In order to measure the internal resistance r, of a cell of emf E, a meter bridge of wire resistance
R₁ = 50 , a resistance R/2, another cell of emf E/2 (internal resistance r) and a galvanometer G
are used in a circuit, as shown in the figure. If the null point is found at /=72 cm, then the value of
22.
E
Timing
4
E/2
R/2
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