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Srikanth GK
Lv 4
Srikanth GK asked in Science & MathematicsPhysics · 9 years ago

What is the Value of Capacitance "C"?

A resistor of R=5 and an unknown capacitor are in series. The voltage across the resistor is

Vr= 25 sin(2000t+30 degress) volts. If the current leads the applied voltage by 60 degrees, what is the unknown capacitance C?

Update:

Answer should be 57.7 micro Farads

2 Answers

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  • Pearlsawme
    Lv 7
    9 years ago
    Favorite Answer

    tan θ = ( Xc/R)

    Xc = R tan 60

    1/ ωC = R tan 60

    C =1/ (Rω tan 60) = 1/( 5*2000*tan 60) =5.77e-5 F= 57.7 μ F

    =============================

  • ALBERT
    9 years ago

    4.157C

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