Download Aptitude Crack
img not found img not found

Capacitors

Q1: What is the total current for a 5 MHz, 1 Vac circuit that consists of a 27 pF capacitor and a 1 k resistor connected in parallel?

A 459 A

B 647 A

C 1.31 mA

D 1.85 mA

ANS:C - 1.31 mA

ITotal = sqrt [ (V/R)^2 + (V/Xc)^2 ].
ITotal = sqrt [ (1/1000)^2 + (2pi(5MHz)(27pico))^2].

NOTE:

XC= 1 over 1/2piFC.
Or in simplest term = 2piFC.

So it becomes ITotal = Sqrt [ V/R)^2 + (2piFC)^2].
ITotal = 1.31mA.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.