0
Actually, its a matter of terminology... Impedance can be used in a DC circuit. We just call it resistance, however, transient analysis would imply a different notation.
To be clear, impedance is normally used in AC circuits, and it is the electrical opposition to AC, taking into account not only voltage, but phase angle.
In a DC circuit, impedance and resistance are the same thing, simply with a phase angle of zero.
What else can I help you with?
The opposition to the flow of electrical current?
In a DC circuit . . . resistance. In an AC circuit . . . impedance.
Impedance of electric circuit?
The impedance of electric circuit refers to the measure of the opposition that a circuit presents to a current when a voltage is applied.
What are the factors that affect impedance?
In AC, impedance (Z) takes on real and imaginary components, and so do voltage (V) and current (I). Re(Z) is affected the DC resistance. Im(Z) is determined by the capacitive and inductive components of the circuit.
The total opposition to an alternating current presented by a circuit is called a?
impedance
Resistive forces in an ac circuit is?
Impedance
Prove that capacitor will be open circuit if dc souce is applied?
the impedance of the capacitor is given by Xc=1/jwC where w=2*pi*f and for DC source f=0 hence Xc=infinity ie, the capacitor will provide infinite impedance for DC, or its Open circuit
The opposition to the flow of electrical current?
In a DC circuit . . . resistance. In an AC circuit . . . impedance.
How can convert pulse setting DC to continus DC?
We can use an inductor in series with the circuit to minimize pulses or ripples in the D.C. The inductor provide zero impedance for a D.C source, but provide high impedance for a pulsated wave, so it will not allow pulses to pass through it. A high inductance in the circuit provides smooth D.C. On the other hand we can have a capacitor in parallel to the output.
What is the unit of a impidance?
Impedance is expressed in units of 'ohms'.In a DC situation, impedance is simply the scalar resistance.In a circuit where voltage/current have time-varying components,impedance is a complex quantity, with both magnitude and angle.
What will be the impedance of a C-R circuit consisting of a resistance of 20ohm and capacitance 2microfarad when it is connected to direct current?
In a direct current (DC) circuit, a capacitor will eventually charge up and act as an open circuit, meaning it will not allow current to flow after reaching full charge. As a result, the impedance of a resistor-capacitor (C-R) circuit under DC conditions is simply the resistance value. Therefore, the impedance of the given C-R circuit with a resistance of 20 ohms and a capacitance of 2 microfarads is 20 ohms.
How can you identify the branch parallel circuit with the what will have the least amount of current flow?
In a DC circuit, it's the branch with the largest resistance. In an AC circuit, it's the branch with the largest magnitude of impedance.
What is the impedance of a series R-L-C circuit?
the net oppostion offered by the rlc circuit for the ac current to pass through it is called the impedance of rlc circuitAnswerThe impedance of an RLC circuit is the vector sum of the circuit's resistance, inductive reactance, and capacitive reactance, expressed in ohms.
Impedance of electric circuit?
The impedance of electric circuit refers to the measure of the opposition that a circuit presents to a current when a voltage is applied.
Why use DC circuit when frequecy is zero?
DC has no frequency.
Can a 12vac coil be operated by 24vdc?
no, in an ac circuit the coil provides impedance but the DC coil needs some resistance to limit the current
What happens if dc supply is connected to incomer of transformer?
If a DC supply is connected to the incomer of a transformer, you effectively have a short circuit, because the DC impedance of a transformer (actually, any inductor) is quite low. You will blow something.
Is it the impedance value same in AC and DC?
Since impedance is the vector sum of resistanceand reactance, and since reactance is a function of frequency, impedance only really applies to a.c. circuits. You could argue that, in a d.c. circuit, impedance is equal to resistance, but the term really isn't normally used in d.c.
