The resistance of the meter bridge AB in given figure is 4 Ω. With a cell of emf ε = 005 V and rheostat resistance Rₕ = 2 Ω the null point is obtained at some point J. When the cell is replaced by another one of emf ε = ε₂ the same null point J is found for Rₕ = 6 Ω. The emf ε₂ is:
(A) 0.4V (B) 0.3V
(C) 0.6V (D) 0.5V
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hy
Explanation:
C)........... ..........
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