Answer to Question #108875 in Electrical Engineering for Badd

Question #108875
1.

A 400 mH coil of negligible resistance is connected to an AC circuit in which an effective current of 6 mA is flowing. Find out the voltage across the coil if the frequency is 1000 Hz.

2.

A capacitor of capacitance 102/π µF is connected across a 220 V, 50 Hz A.C. mains. Calculate the capacitive reactance, RMS value of current and write down the equations of voltage and current.

3.

Find the impedance of a series RLC circuit if the inductive reactance, capacitive reactance and resistance are 184 Ω, 144 Ω and 30 Ω respectively. Also calculate the phase angle between voltage and current.
1
Expert's answer
2020-04-10T13:40:03-0400

1) The voltage can be found by Ohm's law:


2) The capacitive reactance is


RMS value of current:



3) The impedance of a series RLC circuit is


The phase angle between voltage and current equals



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