Question
Physics Question on Current electricity
A larger dry cell has higher emf. The emf of a dry cell is proportional to its size.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
If both assertion and reason are false
Solution
The electrical force of a cell or battery called electromotive force (emf). This force, which makes electrons How around a circuit. Each kind of cell has a particular emf. The size of a cell has no effect on its emf. Tire chemicals in the cell determines its emf, but large cells last longer than small cells of same basic type. This means that from a large cell, we get a particular emf for more time as compared to small cell.