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Correct option is B. Self induction. The choke coil works because it acts as an inductor. When the current passing through changes, as AC currents do, it typically creates a magnetic field in the coil that works against that current. This property, known as inductance.
Choke coil is a part used in the electrical circuits to allow DC current to flow through while blocking AC current from passing. A choke usually consists of a coil of insulated wire that is often wound on a magnetic core although some consist of a donut shaped “bead” of ferrite material strung on wire. The low electrical resistance allows ...
A closed circuit consists of a source of constant emf x i and a choke coil of inductance L connected in series. The active resistance of the whole circuit is equal to R. It is in steady state. At the moment t = 0 the choke coil inductance was decreased abruptly 4 times its initial value.
The choke is a coil or inductor to suppress a signal, usually an AC signal. The choke consists of an inductor and a resistor, the coil has a large inductance and very low resistance. Thus, the net resistance offered by the circuit is Z known as the impedance.
In electronics , a choke is an inductor used to block higher-frequency alternating current (AC) in an electrical circuit, while passing lower-frequency or direct current (DC) A choke coil has high inductance and low resistance so, it is capable of producing very high induced e.m.f. which produces discharge in the tube.
Correct option is A. ac The choke coil can be used only in ac circuits, not in dc circuits, because for dc $$ ( \omega = 0 ) $$ the inductive reactance $$ X_L = \omega L $$ of the coil is zero, only the resistance of the coil remains effective which too is almost zero.
In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is produced when the choke current changes uniformly from 0.25 A to 0 in a duration of 0.025 ms. The self-inductance of the choke coil (in mH) is estimated to be .
A choke coil is a : A choke coil is essentially an indutor coil with large inductance and very low resistance. It offers high inductive-reactance, thus high impedance, to AC voltage and thus limits the current in AC circuit, without increasing the resistance of the circuit.
Choke coil is combination of resistance and inductor. Which is used to pass dc current through Circuit properly and to attenuate AC current flow in circuit. For this purpose a large inductance inductor and a low resistance is used so that this can resist AC current more.
The coefficient of induction of a choke coil is $$ 0.1\,H $$ and resistance is $$ 12 \Omega $$ . If it is connected to an alternating current source of frequency $$ 60 \,Hz $$ , then power factor will be
