18. The power supply drives the primary coil at 9.9 MHz. If thi frequency is doubled, how must the capacitor in the second ary circuit be changed? A. Increase by a factor of 2 B. Increase by a factor of V2 C. Decrease by a factor of 2 D. Decrease by a factor of 4

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18. The power supply drives the primary coil at 9.9 MHz. If this
frequency is doubled, how must the capacitor in the second-
ary circuit be changed?
A. Increase by a factor of 2
B. Increase by a factor of V2
C. Decrease by a factor of 2
D. Decrease by a factor of 4
Transcribed Image Text:18. The power supply drives the primary coil at 9.9 MHz. If this frequency is doubled, how must the capacitor in the second- ary circuit be changed? A. Increase by a factor of 2 B. Increase by a factor of V2 C. Decrease by a factor of 2 D. Decrease by a factor of 4
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