Voltalc cells produce a positive overall charge. What does this indicate? OA. The reaction is likely to be endothermic.
OB. The reaction is spontaneous.
OC. The reaction is not likely to occur.
OD. The reaction is not spontaneous.

The reaction is spontaneous.

Explanation:

If voltaic cell show positive charge it means reaction is spontaneous taking by itself.

B. The reaction is spontaneous.

Explanation:

Edmentum

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.