MHT CET20228 Aug 2022Evening ShiftPhysicsAlternating CurrentActual
The frequency for which a 5 F capacitor has a reactance of 1 1000 is given by
Options
- A1 1000 ~Hz
- B1000 ~Hz
- C100 MHz
- D1000 Hz
Correct answer
C. 100 MHz
Step-by-step solution
Concept: reactance of capacitor is X_c= 1 c = 1 2 f C Given X_c=10⁻³ , C=5 10⁻⁶ ~F aligned & 10⁻³ = 1 2 f (5 10⁻⁶ ) & f = 1 10 10⁻⁹ ~Hz = 10^8 Hz = 100 MHz aligned