1. A coil of inductance 318.3 mH and negligible resistance is connected in series with a 2009 resistor to a 240 V, 50 Hz supply. Calculate (a) the inductive reactance of the coil, (b) the impedance of the circuit, (c) the current in the circuit, (d) the p.d. across each component and (e) the circuit phase angle. 2. A coil consists of a resistance of 100 52 and an inductance of 200 mH. If an alternating voltage, v, given by v = 200 sin500t volts is applied across the coil, calculate (a) the circuit impedance, (b) the current flowing, (c) the p.d. across the resistance, (d) the p.d. across the inductance and (e) the phase angle between voltage and dentrent. Maritin 3. A coil of inductance 159.2 mH and resistance 20 2 is connected in series with a 60 2 resistor to a 240 V, 50 Hz supply. Determine (a) the impedance of the circuit, (b) the current in the circuit, (c) the circuit phase angle, (d) the p.d. across the 60 22 resistor and (e) the p.d. across the coil. (f) Draw the circuit phasor diagram showing all voltages. 4. A voltage of 35 V is applied across a C-R series circuit. If the voltage across the resistor is 21 V, find the voltage across the capacitor. 5. A resistance of 5092 is connected in series with a capacitance of 20F. If a supply of 200 V, 100 Hz is connected across the arrangement, find (a) the circuit impedance, (b) the current flowing and (c) the phase angle between voltage and current. -6. A capacitor C is connected in series with a 40 52 resistor across a supply of frequency 60 Hz. A current of 3 A flows and the circuit impedance is 50 2. Calculate: (a) the value of capacitance, C, (b) the supply voltage, (c) the phase angle between the supply voltage and current, (d) the p.d. across the resistor and (e) the p.d. across the capacitor. Draw the phasor diagram. 7. An alternating voltage v=250 sin800t volts is applied across a series circuit containing a 30-2 resistor ( es the p.d. across the resistor, (d) the p.d. across the capacitor and (e) the phase angle between voltage and current.