Question

justify emf of a cell is always positive​

Answer 1

Answer:

your answer is in the above pic...........

Explanation:

please thank my answers....

Answer 2

Concept:

The amount of energy required to move a unit positive charge via an external circuit connected to a cell is known as electromotive force, or EMF. Electromotive force, often known as emf, is measured in joules per coulomb.

Solution:

When a cell is written in shorthand notation, the emf is given a positive value if the cell reaction is spontaneous by convention. That is, if the electrode on the left pushes electrons into the external circuit and the electrode on the right pulls them out, the cell emf is displayed on the voltmeter dial.

#SPJ2