Study E6D07 - Hamboozler

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What is the usable frequency range of inductors that use toroidal cores, assuming a correct selection of core material for the frequency being used?

Select	Answer
A	From a few kHz to no more than 30 MHz
B	From about 100 kHz to at least 1000 GHz
C	From less than 20 Hz to approximately 300 MHz
D	From approximately 10 Hz to no more than 3000 kHz