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

question 55

Multiple Choice

A 5-µF, a 7-µF, and an unknown capacitor C_X are connected in parallel between points a and b as shown in the figure. 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)C_ab > C_X
• C)5 µF < C_ab < 12 µF
• D)C_ab < 5 µF
• E)C_ab < C_X

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