Final answer:
The emf of a solar cell depends on various factors, including the type of cell and the amount of sunlight falling on it. Without knowing the standard emf value, we cannot calculate the exact emf of the solar cell based on the given information.
Step-by-step explanation:
The emf (electromotive force) of a solar cell can vary depending on various factors, including the type of cell and the amount of sunlight falling on the cell. In this case, the student provided the measured cell voltage as 0.76 volts (V). However, it's important to note that the given information doesn't specify the type of solar cell or the conditions under which the measurement was taken.
To determine the emf of the solar cell, we need to know the standard emf, which is the maximum theoretical voltage that the cell can produce under ideal conditions. Unfortunately, the question doesn't provide the standard emf value. Therefore, we cannot calculate the exact emf of the solar cell based on the given information.