When is a regulator used?

1.	When is a regulator used?
A.	when there are small variations in load current and input voltage
B.	when there are large variations in load current and input voltage
C.	when there are no variations in load current and input voltage
D.	when there are small variations in load current and large variations in input voltage
Answer» B. when there are large variations in load current and input voltage

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When is a regulator used?

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