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Match the entries of Column I with their correct mathematical expressions in Column II
Column I
(A) Balanced condition of wheatstone bridge
(1) \( \frac{R_{1}}{R_{2}}=\frac{R_{3}}{R_{4}} \)
(B) Comparison of emf of
(2) \( \frac{R}{S}=\frac{l_{1}}{100-l_{1}} \) two cells field.
(3) \( \frac{E_{1}}{E_{2}}=\frac{l_{1}}{l_{2}} \)
(C) Determination of internal resistance of a cell
(D) Determination of unknown resistance
(4) \( r=R\left(\frac{l_{1}}{l_{2}}-1\right) \) by meter bridge
(a) (A) \( \rightarrow \) (4); (B) \( \rightarrow \) (2); C \( \rightarrow \) (3); (D) \( \rightarrow \) (1)
(b) (A) \( \rightarrow \) (1); (B) \( \rightarrow \) (3); C \( \rightarrow \) (4); (D) \( \rightarrow \) (2)
(c) (A) \( \rightarrow \) (3); (B) \( \rightarrow \) (4); C \( \rightarrow \) (2); (D) \( \rightarrow \) (1)
(d) (A) \( \rightarrow \) (4); (B) \( \rightarrow \) (3); C \( \rightarrow \) (2); (D) \( \rightarrow \) (1)
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