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the nonideal batteries are connected in ...

the nonideal batteries are connected in series. Consider the following statements :
(A)The equivalent emf is larger than either of the two emfs.
(B) the equivalent internal resistances is smaller than either of the two internal resistances.

A

(Each of A and B is correct.

B

(b)A is correct but B is worng

C

(c )B is correct but A is worng

D

(d)each of A and B are worng

Text Solution

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The correct Answer is:
To solve the problem regarding the non-ideal batteries connected in series, we will analyze the statements given: 1. **Understanding Equivalent EMF in Series:** - When batteries are connected in series, the total or equivalent electromotive force (EMF) is the sum of the individual EMFs of the batteries. - If we have two batteries with EMFs \( E_1 \) and \( E_2 \), then the equivalent EMF \( E_{eq} \) can be expressed as: \[ E_{eq} = E_1 + E_2 \] - Since \( E_{eq} \) is the sum of \( E_1 \) and \( E_2 \), it is clear that: \[ E_{eq} > E_1 \quad \text{and} \quad E_{eq} > E_2 \] - Therefore, statement (A) is **true**. 2. **Understanding Equivalent Internal Resistance in Series:** - The internal resistances of batteries in series add up, similar to how EMFs add up. - If the internal resistances of the two batteries are \( R_1 \) and \( R_2 \), then the equivalent internal resistance \( R_{eq} \) can be expressed as: \[ R_{eq} = R_1 + R_2 \] - Since \( R_{eq} \) is the sum of \( R_1 \) and \( R_2 \), it follows that: \[ R_{eq} > R_1 \quad \text{and} \quad R_{eq} > R_2 \] - Therefore, statement (B) is **false**. 3. **Conclusion:** - From our analysis, we conclude that statement (A) is correct and statement (B) is incorrect. ### Final Answer: - Statement (A) is true: The equivalent EMF is larger than either of the two EMFs. - Statement (B) is false: The equivalent internal resistance is not smaller than either of the two internal resistances.
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