A 5-µF,a 7-µF,and an Unknown Capacitor C_X Are Connected in Series

question 8

Multiple Choice

A 5-µF,a 7-µF,and an unknown capacitor C_X are connected in series between points a and b.What do you know about the equivalent capacitance C_ab between a and b? (There could be more than one correct choice. )

• A)C_ab > 12 µF
• B)5 µF < C_ab < 7 µF
• C)5 µF < C_ab < 12 µF
• D)C_ab < 5 µF
• E)C_ab < C_X

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