Which of the following statements is correct ?

A. Mica capacitors are available in capacitance values of 5 to 20 uF

B. Air capapitors have a black band to indicate the outside foil

C. Electrolytic capacitors must be connected in correct polarityCorrect Answer

D. Ceramic capacitors must be connected in correct polarity

Correct Option: C. Electrolytic capacitors must be connected in correct polarity

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