0
Wiki User
∙ 14y agoElectrical impedance is the overall opposition to a current in a circuit. It is symbolized by 'Z'
Add your answer:
Earn +20 pts
What is the opposition of current flow measured in?
The opposition of current flow is measured in ohms. For DC circuits it is resistance and for AC circuits it is impedance.
Short definition of impedance in connection with ac?
Impedance in an AC circuit is like resistance. In fact, impedance is measured in ohms, just like resistance. Impedance takes into account the fact that current and voltage are often not in phase with each other due to capacitive and inductive reactance.
What is analog audio impedance?
To get all the audio voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is at least ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What means Impedance?
To get all the audio voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is at least ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What is input and output impedance?
To get all the voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.
What is impedance and its unit of measurement?
Impedance is measured in Ohms defined as total resistance to current (Amps) flow
Resistance is measured in what?
Electrical resistance (and impedance) is measured in ohms(Ω).
How is voltage measured?
Use a voltmeter with a high input impedance and measure at the source the voltage.
How do you measure speaker impedance?
The real impedance is the resistance in ohms more 20%. A coil resistance of 6,7 ohms X 1.20 = an impedance of 8.04 ohms. If the voice-coil had exactly 8 ohms, the impedance would be 9.6 ohms and the sound would be unclear, tending to more basses.
What is the opposition of current flow measured in?
The opposition of current flow is measured in ohms. For DC circuits it is resistance and for AC circuits it is impedance.
What opposes the flow of electric current?
Resistance in OMS: In alternating current is is measured in impedance.
What opposes the flow of an electric currents?
Resistance in OMS: In alternating current is is measured in impedance.
Short definition of impedance in connection with ac?
Impedance in an AC circuit is like resistance. In fact, impedance is measured in ohms, just like resistance. Impedance takes into account the fact that current and voltage are often not in phase with each other due to capacitive and inductive reactance.
How much voltage or current should be applied for impedance measurement to a human body?
Since the objective is to find out the impedance between two points, it is advisable to have a meter that has a high input impedance; the higher the better. This is because when the probes are applied across the "impedance" to be measured, the input impedance of the meter is effectively in parallel with the measured impedance. So, if the input impedance of the meter is infinite, the accuracy of measurement will be 100%. Now, let us take a look at the situation on the human body: If the 2 points for measurement are selected on the same acupuncture meridian, the impedance will be lower than if you select one point on the meridian and one point randomly on the other parts of the body. If you select 2 points (not on any meridian) randomly on the human body, the impedance will even be higher. If you are using electrodes with sticky pads for skin contact, the result will be different from that measured with acupuncture needles puncturing the 2 points. Hope this is helpful. K. Kit Sum.
What is impedance in speakers and can it be measured in watts?
Impedance in electricity is described as an opposing force to electron flow. It consists of a combination of resistance, capacitance, and inductance. This forms the actual "resistance" to electron flow in a circuit versus "pure resistance"such as a resistor added in a circuit to slow electron flow. Impedance is more prevalent in AC circuits versus DC circuits as it reacts to AC current flow much more than DC current. Current flow in a speaker circuit is considered AC so impedance is more meaningful in a speaker setup. Impedance can be measured or calculated based upon current flow so it can be converted to watts using the formula Watts = amps times voltage.AnswerImpedance is the vector sum of resistance and reactance, and is measured in ohms. No, it cannot be measured in watts, which the unit for power.
What are input impedance in a load cell?
The resistance measured across the excitation terminals of the load cell, when the output terminals are open.
What is inpedance?
In electrical engineering, impedance measures how easily a circuit conducts current when a voltage runs through it. Measured in ohms, impedance is a way of telling you how much of the voltage introduced at one end will really make it to the other end.
