Power in AC Circuits

Which of the ac circuits with the following input voltage and current dissipates maximum power $P$?

The phase difference between current and ac source voltage is $53°$. If rms value of current and voltage is $10 \mathrm{A}$ and $20 \mathrm{V}$ respectively, then power dissipated in the circuit is

An alternating current is represented by $i = 70.7 \sin 520 t$. Determine :

1. Frequency

2.  The current at $0.0015 \mathrm{s}$ after passing through zero increasing positively
3. r.m.s. value
4. Average value.

The potential difference $V$and the current $I$ flowing through an A.C circuit is given by $V=5 \cos (\omega t-\frac{\mathrm{\pi }}{6})$ in volt  and $I=10 \sin \left(\omega t\right)$ in ampere. The average power dissipated in the circuit is:

An alternating voltage of $260 \mathrm{V}$ and $\omega =100 \mathrm{rad} {\mathrm{s}}^{-1}$ is applied across an $LCR$ series circuit, where $L=0.01 \mathrm{H}, C=4\times {10}^{-4} \mathrm{F}$ and $R=10 \mathrm{\Omega }$. Find the inductive reactance and the power supplied by the source:

The potential difference $V$and the current $I$ flowing through an A.C circuit is given by $V=5 \cos (\omega t-\frac{\mathrm{\pi }}{6})$ volt and $I=10 \sin \omega t$ ampere. The average power dissipated in the circuit is:

In a series resonant circuit, having $\mathrm{L}, \mathrm{C}$ and $\mathrm{R}$as its elements, the resonant current is $i$. The power dissipated in the circuit at resonance is

A resistance $\left(R\right)$, inductance $\left(L\right)$ and capacitance $\left(C\right)$ are connected in series to an $AC$ source of voltage $V$ having variable frequency. If the energy delivered by the source to the circuit during one period if the operating frequency is twice the resonance frequency is $\frac{\pi R\sqrt{LC}{V}^2}{R^2+m\left(\frac{L}{C}\right)}$, find $100m$.

The voltage $\text{V}$ and current $\text{i}$ in AC circuit are given by,

$V=50 \sin \left(50t\right) \mathrm{volt}$

$i=50 \sin \left(50t+\frac{\pi }{3}\right) \mathrm{mA}$

The power dissipated in circuit is:

The average power in a $L-C-R$ circuit depends upon

The potential difference $V$and the current $I$ flowing through an A.C circuit is given by $V=5 \cos (\omega t-\frac{\mathrm{\pi }}{6})$ volts and $I=10 \sin \left(\omega t\right)$ amperes. The average power dissipated in the circuit is:

Power consumed in an AC circuit becomes zero if

The power dissipated in the adjacent circuit is-

In an ac circuit the voltage and current are $V\mathit{=}{V}_{m}sin\mathit{ }\omega t$ and $I\mathit{=}{I}_{m}sin\mathit{ }\left(\omega t\mathit{-}\frac{\pi }{\mathit{2}}\right)$, the power dissipated in the circuit will be-

Which of the following is an example of Net Factor Income from Abroad (NFIA)?

Which ratio is used to measure the efficiency of a company in using its assets to generate sales?

What does the term 'underwriting' refer to in the context of share capital?

Which of the following is a right of consumers under the Consumer Protection Act, 1986?

Which Prime Minister led the United Progressive Alliance (UPA) government from 2004 to 2014?

Which coalition government was in power during the period 2004-2014?