Question

MP Introductory Physics || (PHY-11 ses / 19SUCMP PHY-112-20101 / Week 6 / Week 6 Quiz Consider a capacitor or inductor connected to an ac source. Which of the following will result in increased peak current through the circuit? Select one: a. Increasing inductance O b. Increasing peak voltage o c. Decreasing capacitance @ d. Increasing frequency Next pagi Jump to... Week 7 Online Learning Resources s Lindsey Dowdle (Log out)

Answer 1

Since reactance of a capacitor is given by

Xc= Info

Therefore when frequency (f) is increased reactance of capacitor will decrease and thus peak current will increase if only capacitor is connected in series while if inductor is connected then the reactance of inductor will increase because

XL = 2n12

But if peak voltage is increased then whateven capacitor or inductor is connected peak current will increase. Thus correct option is b) increasing peak voltage

2.

Since reactance of capacitor depends on frequency and not the capacitance so on changing freqency of AC source capacitance will remain unchanged. Thus correct option is FALSE