What do a voltmeter connected to two terminals of a cell read: the emf or the terminal potential difference?

Explanation

To determine what a voltmeter connected to two terminals of a cell reads, we need to analyze the concepts of electromotive force (EMF) and terminal potential difference.

### Step-by-Step Solution:

1. **Understanding EMF and Terminal Potential Difference**:
- EMF (Electromotive Force) is the maximum potential difference provided by a cell when no current is flowing. It represents the energy supplied per unit charge by the cell.
- Terminal Potential Difference is the potential difference across the terminals of the cell when it is connected in a circuit and current is flowing. This value is affected by the internal resistance of the cell.

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