Voltage across a Capacitor?

The voltage across a 60 microfarad capacitor is described by the equation v_c=(18 V) cos(200t), where t is in seconds.

1) What is the voltage across the capacitor at t =0.010 s?

2) What is the capacitive reactance?

3) What is the peak current?

Comments

  • a) v_c = (18)cos(200*.01) *IN RADIANS*

    b) X_c = 1/wC

    where w = 200 and C = 60*10^-6

    c) I_p = V_p/X_c = 10/X_c

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