Alternating Cur...

A series $$AC$$ circuit has a resistance of $$4 \Omega$$ and a reactance of $$3 \Omega$$. The impedance of the circuit is

A leaky capacitor $$10\ \Omega/ 60^{\circ}$$ is connected in series with a 10 $$\Omega$$ resistance. Find the overall impedance.

An $$AC$$ source producing emf $$\displaystyle E = E_0 [cos (100 \pi s^{-1}) t] + E_0  cos  [(500 \pi s^{-1})t ]$$ is connected in series with a capacitor and a resistance, the steady state current in the circuit is found to be $$i = i_1 [cos (100 \pi s^{-1}) t + \varphi_1] + i_2  cos  [(500 \pi s^{-1})t + \varphi_2]$$

If the output is taken across a capacitor in a series RLC circuit then it acts as

An inductor, a resistor and a capacitor are joined in series with an $$AC$$ source. As the frequency of the source is slightly increased from a very low value, the reactance

$$\displaystyle I = 6\cos  wt + 8\sin wt$$ is applied across a resistor of 40 $$\Omega$$. Find the potential difference across the resistor.

Which of the following plots may represent the reactance of a series $$LC$$ combination?

An inductor $$10 \Omega/60^{\circ}$$ is connected to a $$5 \Omega$$ resistance in series. Find net impedance.

A capacitor acts as an infinite resistance for

The correct curve representing the variation of capacity reactance $$X_c$$ with frequency $$f$$ is