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# What is the natural response of RL circuit?

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## What is the natural response of RL circuit?

The zero-input response (ZIR), also called the natural response, of an RL circuit describes the behavior of the circuit after it has reached constant voltages and currents and is disconnected from any power source. It is called the zero-input response because it requires no input.

## What is the step response of a RL circuit?

The step response of a circuit is its behavior when the excitation is the step function, which may be a voltage or a current source. ➢ At that time, the inductor becomes a short circuit, and the voltage across it is zero. The entire source voltage appears across R.

Which equation shows the natural response of the current of an RL circuit?

This is called the natural response. The time constant for an RL circuit is τ = L R \tau = \dfrac{\text L}{\text R} τ=RL. The natural response of a circuit is what the circuit does “naturally” when it has some internal energy and we allow it to dissipate. It is the most basic behavior of a circuit.

What is step response and natural response?

The forced response is what the circuit does with the sources turned on, but with the initial conditions set to zero. The natural response is what the circuit does including the initial conditions, but with the input suppressed. The total response is the sum of the forced response plus the natural response.

### What is step response in RL and RC circuit?

The response or the output of the series RL and RC circuits driven dc excitations is called step response of the network. Consider that a dc voltage is applied to any general network through a switch k as shown. in fig. Initially switch k is kept open for very long time. So no voltage is applied to the network.

### What is meant by natural response?

Natural response is the system’s response to initial conditions with all external forces set to zero.

What is the natural response for a system defined by differential equation?

Natural response: The response of a network without a source in it is called a natural response (NR) and it gives the transient response. This response depends on the nature of the passive element and it is independent of the type of input.

What do you understand by natural response?

#### What is natural response of LTI system?

The transfer function of a dynamic linear time-invariant (LTI) system is given as a ratio of polynomials: $$G(s)=\frac{n(s)}{d(s)}$$. The poles of the transfer function are the roots of the denominator polynomial $$d(s)$$.

#### What is free and forced response?

The free response of a system is the solution of the describing differential equation of the system, when the input is zero. In our case the input into the system is the force F [N].

What is the definition of natural response?

The natural response of a circuit is what the circuit does when there are no external influences (no energy coming in). It is the most basic behavior of the circuit. When placed within a larger circuit, the natural response plays an essential part of the overall behavior.

What is the natural response of an RL circuit?

• The natural response of an RL circuit describes the inductor current in a circuit consisting only of resistors and a single equivalent inductance. The circuit is source-free; the response is entirely due to energy initially stored in the inductor. • The RL circuit natural response is of the form: τ t i(t ) = I e− 0, for t ≥ 0

## What is the Heaviside step function of RL circuit?

Here, u (t) is Heaviside step function and τ is the time constant represented by L/R The natural response of an RL circuit is termed as zero input response where this response defines the circuit’s performance when it reaches constant voltage and current values.

## How do you derive the voltage of an RL circuit?

( ext {RL}) (RL) circuit. This derivation is similar to the RC natural response. v = ext L \\,di/dt v = Ldi/dt. The voltage depends on how current is changing from moment to moment. The formal derivation requires concepts from calculus, specifically derivatives, to handle this dependence on time.

What is a natural response?

It is the most basic behavior of the circuit. When placed within a larger circuit, the natural response plays an essential part of the overall behavior. To get the circuit to do something, we call on an outside helper to add some energy and then step back and leave it alone, while we watch what happens.