AC Circuits Physics - AC Circuits

When is an AC Circuit non inductive ?

What is the average value of alternating current over a complete cycle?

Explain why the total impedance of a circuit decreases when a capacitor is added in series with inductor and resistor.

A \(100 \Omega\) resistor is connected to a \(220 V , 50 Hz\) supply. Calculate: (a) r.m.s. value of current and (b) net power consumed over the full cycle.

An alternating e.m.f., \(e=200 \sin 314.2 t\) volt is applied between the terminals of an electric bulb whose filament ha a resistance of \(100 \Omega\). Calculate the following: (a) RMS current (b) Frequency of AC signal (c) Period of AC signal.

Define: (a) Inductive reactance (b) Capacitive reactance (c) Impedance.

A \(0.1 H\) inductor, a \(25 \times 10^{-6} F\) capacitor and a 15 resistor are connected in series to a \(120 V , 50 Ac\) source. Calculate the resonant frequency.

Explain the terms: (a) Capacitive reactance (b) Inductive reactance (e) Impedance.

A \(1000 mH\) inductor, \(36 mF\) capacitor and \(12 \Omega\) resistor are connected in series to \(120 V ; 50 Hz AC\) source. Calculate: (i) impedance of the circuit at resonance (ii) current at resonance (iii) resonant frequency.