Question

It is possible to make a voltaic pile with pennies, nickels, and pieces of salty paper stacked into a pile. You can prove it is producing electricity by using a voltmeter to show the voltage. What was the role of the salty paper in causing the pile of coins to be a battery?

a) the salty paper caused the coins to have different electron charges

b) the salty paper caused one of the coins to oxidize slightly thereby creating ions which were reduced by the electrons flowing from the adjacent coin

c) the change in temperature of electrons as they move from one coin to the other

d)the salty paper changed the intrinsic rate of electron flow from one coin to the next

Answer 1

Here, correct option is :

(b) the salty paper caused one of the coins to oxidize slightly thereby creating ions which were reduced by the electrons flowing from the adjacent coin.