Carbon rods are used in wet and dry cells because_____________?
Correct answer: C. both (A) and (B)
- A. carbon rod serves as conductor
- B. carbon can resist the attack of battery acid
- C. both (A) and (B)
- D. either (A) or (B)
Explanation
A carbon rod provides a conducting path in the cell while also resisting chemical attack from the electrolyte. Since both functions are required, option c is correct.
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