Final answer:
To forward bias a PN junction diode, you must indeed apply a higher voltage to the P side than to the N side; this statement is true.
Step-by-step explanation:
The statement that to forward bias a PN junction diode, the voltage on the P side of the junction must be higher than the voltage on the N side is True. In forward bias, the positive side of the battery is connected to the p-type material, which narrows the depletion layer and reduces the potential energy difference across the junction, allowing for easy flow of current. In contrast, reverse bias occurs when the positive side of the battery is connected to the n-type material, which widens the depletion layer and prevents current flow.