Problem 1: The peak voltage of an ac supply is 300 V. What is the rms voltage?
Problem 2: The rms value of current in an ac circuit is 10 A. What is the peak current?
Problem 3: The ac voltage across a 0.5 micro F capacitor is 16 sin(2×10^3t)V. Find (a) the capacitive reactance (b) the peak value of the current through the capacitor?
Problem 4: The voltage across a 0.01 micro F capacitor is 240 sin(1.25×10^4t-30)V. Write the mathematical expression for the current through it.
Problem 5: An inductor with an inductance of 100 micro H passes a current of 10 mA when its terminal voltage is 6.3 V. Calculate the frequency of A.C supply.
Problem 6: (a) Calculate the inductive reactance of a 3.00 mH inductor, when 60.0 Hz and 10.0 kHz A.C voltages are applied. (b) What is the rms current at each frequency if the applied rms voltage is 120 V?
Problem 7: For the same RLC series circuit having a 40.0 ohm resistor, a 3.00 mH inductor, and a 5.00 micro F capacitor; (a) Find the resonant frequency (b) Calculate I(rms) at resonance if V(rms) is 120 V.
Problem 8: A coil of pure inductance of 318 mH is connected in series with a pure resistance of 75 ohm. The voltage across resistor is 150 V and the frequency of power supply is 50 Hz. Calculate the voltage of power supply and the phase angle.
Problem 9: A resistor of resistance 30 ohm is connected in series with a capacitor of capacitance 79.5 micro F across a power supply of 50 Hz and 100 V. Find (a) impedance (b) current (c) phase angle (d) equation for the instantaneous value of current?
Problem 10: A coil having a resistance of 7 ohm and an inductance of 31.8 mH is connected to 230 V, 50Hz supply. Calculate (a) the circuit current (b) phase angle (c) power factor (d) power consumed.