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Why a coil of wire placaed in series circuit allows low frequency current but not high frequency current to pass?
The opposition to an alternating current offered by a coil, or inductor, is called impedance (symbol Z, measured in ohms) which, in turn, is made up of two components: resistance (symbol R) and inductive reactance (symbol XL). These three quantities are related as follows: Z2 = R2 + XL2.
The resistance of an inductor is a fixed value which depends upon the length of the coil's wire, the cross-sectional area of the wire, and the resistivity of the material from which the wire is made.
The inductive reactance of an inductor, on the other hand is directly proportional to the frequency of the supply. So, at high frequencies, an inductor's inductive reactance is very much higher than at low frequencies.
So, at high frequencies, the impedance of the inductor is higher because its inductive reactance is higher.
The current flowing through a coil is, by Ohm's Law: I = V / Z. So, at high frequencies, the inductor's impedance will be much higher than at low frequencies, which means that a very much smaller current will flow when the frequency is high compare to when the frequency is low.
What else can I help you with?
A connection that allows current to take an unintended path?
"short circuit"
What is the part of a circuit that connects or disconnects the circuit?
Switches, fuses and circuit breakers are examples of some of the electrical parts which can connect or disconnect a circuit to a source of current. A diode does it for alternating current, but only for one half of each cycle. "Connecting" allows an electric current to flow through the circuit. "Disconnecting" stops an electric current from flowing through the circuit.
What circuit is it when electrical current has two or more paths to follow?
A circuit in which electricity only flows in one path is called a series circuit.
What is the function of an electrical circuit?
The function of a light bulb in an electric circuit is that it turns electrical energy into light.
What is an RC oscillator?
AnswerOscillator that uses two passive elements for the timing. Namely resistor and capacitor.AnswerIt's an oscillator whose frequency-determining "tank" does not contain an inductive element, like a coil. These are good for extremely low frequencies--down to a few Hertz--but LC oscillators are better at radio frequencies.AnswerAn Rc oscillator is an oscillator that uses 3 or more phase shift networks, ( a network of a capacitor and resistor) as a frequency determining network (tank circuit) and a transistor to amplify that output, that only allows a certain frequency through by only letting the frequency that is able to shift 180 degrees out of phase through. And also has a feedback network from the collector (of the transistor) circuit, to compensate for circuit loss to oscillation.
Why LCR series circuit is called acceptor circuit?
Answer:A given combination of R,L and C in series allows the current to flow in a certain frequency range only.For this reason it is known as an acceptor circuit i.e.,it accepts some specific frequencies....
What kind of circuit allows a current to flow through?
Any complete circuit. ==== An electrical circuit.
What path allows only one route for an electric current?
It is series circuit
In a circuit the purpose of a switch is to?
In a circuit, the purpose of a switch is to control the current flow to the load by opening the circuit (off) or closing the circuit (on). When the circuit is open, the is no complete loop through which the current can flow. When the switch closes the circuit, it restores the loop, and thus allows the current to flow.
A path created for a current that allows only one route for the current is called?
Series circuit.
A connection that allows current to take an unintended path?
"short circuit"
What path is created for a current that allows only one route for the current?
A controlled and linear path of current is an electrical circuit. A complete circuit has a beginning and terminus for the flow of charge.
What kind of circuit allows a current to flow through it?
A closed circuit allows a current to flow through it, which means there is a complete path for the electrons to travel from the source, through the load, and back to the source. This circuit can consist of various components like wires, resistors, capacitors, and more, connected in a loop to enable the flow of current.
Is there a polarity in an alternating current circuits?
Yes, there is a polarity in an alternating current (AC) circuit, but it constantly changes direction. In an AC circuit, the current flow reverses direction periodically, typically 50 or 60 times per second depending on the frequency of the power source. This changing polarity allows the current to flow back and forth, enabling the transmission of electrical energy over long distances efficiently.
A path that allows only one route for an electric current is called a?
A path that allows only one route for an electric current is called a series circuit. In a series circuit, all components are connected in a single loop so that the current passes through each component in sequence.
What can a relay be used?
A relay is an electrical switch. It allows a low current "switch" circuit to control the electricity flow of a high-current circuit load
A path that allows only one route for a current is called a?
series circuit
