AC What is meant by the reactance of a capacitor in a circuit? Find its expression. , 12 | Fifth note of musical scale...

What are the SI units of reactance and impedance in a.c. circuit ?

Consider the following two statements A and B and identify the correct answer. {:A) At resonance of L-C series circuit, the reactance of circuit is minimum. {:B) The reactance of a capacitor is an A.C circuit is similar to the reactance of a capacitor in a D.C circuit

Statement (A) : The reactance offered by an inductance in A.C . Circuit decreases with increase of AC frequency Statement (B) : The reactance offered by capacitor in AC circuit increases with increase of AC frequency.

Explain what is meant by potential energy of a spring ? Obtaining an expression for it and discuss the nature of its variation.

.What is meant by root mean square value of alternating current? Derive an expression of r .m.s value of A.C

What is the impedance of a capacitor of capacitance C in an ac circuit using source of frequency in Hz?

The reactance of capacitor at 50Hz is 10Omega . What will be its reactance at 200Hz ?

A 200 Omega resistor is connected in series with a 5(mu)F capacitor. The voltage across the resistor is V_(R )=(1.20 V) cos (2500 rad s^(-1))t . (a) Derive an expression for the circuit current. (b) Determine the capactive reactance of the capacitor. (c ) derive an experssion for the voltage across the capacitor.