**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.

See problems Chapter 6, Physics of solids | See Problem Chapter 4, Electromagnetic Induction |

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