Question

In: Physics

The voltage amplitude of an ac source is 28.0V , and its angular frequency is 1100rad/s...

The voltage amplitude of an ac source is 28.0V , and its angular frequency is 1100rad/s . Find the current amplitude if the capacitance of a capacitor connected across the source is

A) 1.00

Solutions

Expert Solution

Note that the amplitude of the current is          
          
Imax = Vmax/[Lw]          
          
where          
          
Vmax = amplitude of the voltage =    28   V  
L = inductance          
w = the angular frequency =    1100   rad/s  

          
Thus,          
          
if L =    1.00E-08   F  
          
Then          
          
Imax =    2.55E+06   A   [ANSWER, PART A]
          
If L =    1.00E-06   F  
          
Then          
          
Imax =    2.55E+04   A   [ANSWER, PART B]
          
Lastly, if          
          
L =    0.0001   F  
          
Then          
          
Imax =    255 A      [ANSWER, PART C]


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