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G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To prevent damage to the battery due to excessive voltage at high illumination levels
B	To prevent overload by regulating the charging voltage
C	To limit the current flowing from the panel to a safe value
D	To prevent discharge of the battery through the panel during times of low or no illumination

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