Carbon rods are used in wet and dry cells because_____________?
(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)
Carbon rods are used in wet and dry cells because_____________?
(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)
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