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Self-Induction Self-induction is the property of a coil by virtue of which the coil opposes any change in the strength of current flowing through it by inducing an emf in itself. This induced emf is also called back emf. When the current in a coil is switched ON, then the self induction opposes the growth of the current and when it is switch OFF, then the self-induction opposes the decay of the current.The inductance that would be needed to store 1 kWh of energy in a coil carrying a 200 A current

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Alternating current is transmitted to distant

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`220 V, 50 Hz, AC` is applied to a resistor. The instantaneous value of voltage

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An alternating current of rms value `10 A` is passed through a `12 Omega`. resistor. The maximum potential difference across the resistor

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Same current is flowing in two alternating circuits. The first circuit contains only inductance and the other contains only a capacitor. If the frequency of the emf of AC is increased, the effect on the value of the

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An inductance and a resistance are connected in series with an AC potential. In this

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An AC voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal to `3Omega`, the phase difference (in rad) between the applied voltage and the current in the circuit is

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In a circuit containing R and L , as the frequency of the impressed AC increases, the impedance of the

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When an AC voltage is applied to an L-C-R circuit,

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In a L-C-R series circuit, the potential difference between the terminals of the inductance is 60 V, between the terminals of the capacitor is 30 V and that across the resistance is 40 V. Then, supply voltage will be equal to

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An L-C-R series circuit, connected to a source E, is at resonance.

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A sinusoidal voltage of peak value `300 V` and an angular frequency `omega = 400 rads^(-1)` is applied to series L-C-R circuit, in which `R=3Omega, L = 20 mH and C = 625muF`. The peak current in the circuit

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In an L-C-R circuit if impedance is `sqrt2` times of resistance, then find phase

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An L-C-R circuit contains `R=50 Omega, L=1 mH and C = 0.1 muF`. The impedance of the circuit will be minimum for a frequency

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In an L-C-R series AC circuit, if `omega_0` is the resonant angular frequency, then the quality factor (Q-factor) is given

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In an AC circuit the emf `(e)` and the current `(i)` at any instant are given respectively by, `e =E_0 sin omega t and i = I_0 sin (omegat-phi)` The average power in the circuit over one cycle of AC

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`110 K_(rms)` is applied across a series circuit having resistance `11 Omega` and impedance `22Omega`. The power consumed

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AC generator is used

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The selectivity of a series L-C-R `AC` circuit is large,

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The core of a transformer is laminated

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