The difference between pure resistance and impure resistance, what is a non pure resistance circuit

Difference Between Pure Resistance Circuit and Non-Pure Resistance Circuit:

Pure Resistance Circuits:

A circuit that generates only heat when it is energized. From the perspective of energy conversion, a pure resistance circuit converts all electrical energy into heat energy, that is, electric work is equal to electric heat. (For example:.)

In daily life, pure resistance circuits such as incandescent lamps, electric stoves, rice cookers, electric soldering irons, electric blankets, and jammed motors work w=q.

Non-Pure Resistance Circuits:

A circuit that generates heat and does external work when it is energized. From the perspective of energy conversion, it is the work done by the current that converts the electrical energy into other forms of energy, but there is also a part of the electrical energy that is converted into heat energy, and the electric work is greater than the electric heat. (For example:.)

When electric fans, washing machines, refrigerators, induction cookers, and electric motors are turning, fluorescent lamps, electric bells, and batteries (charging) are >not pure resistance circuits.

Pure electric and non-pure resistive words are mostly used in load equipment connected to the power supply. When the pure resistive load is used, the power is relatively constant, and there is no capacitance or inductance storage and discharge performance, and there will be no peak and excessive inrush current, and the spark is smaller than that in the switchgear. On the contrary, when non-resistive equipment contains large capacitance or inductive equipment, there will be a large inrush current or start-up current when it is turned on (moving) or off, and the spark in the switchgear is also large.

Therefore, the power margin of non-pure resistance equipment is greater than that of pure resistance equipment when budgeting power supply circuits and switches. FYI.

Pure resistance is resistance, and impure resistance is not only resistance, but also capacitive or inductive impedance.

Distinguish the degree of insulation with the material.

For example: electric lights, soldering irons, irons, etc., they just heat up. They are both purely resistive circuits.

However, engines, electric fans, etc., work on the outside world in addition to heat generation, so these are non-pure resistive circuits. There are only resistors, power supplies, and wires in the circuit, and the electrical energy cannot be converted into a circuit in the form of energy other than thermal energy. In the energized state, all the electrical energy is converted into the internal energy of the circuit resistance, and part of the electrical energy is converted into resistance and part of the internal energy is converted into other forms of energy in the circuit without external work, such as engines, fans, etc., and a part of the electrical energy is converted into mechanical energy in the circuit, if the capacitance is zero, the circuit with zero inductance is a pure resistance circuit.

The electric furnace and incandescent lamp that are usually used are considered to be pure resistance circuits. But capacitance, inductance, and inductance are more or less always present in the circuit

The differences between pure resistance and non-pure resistance are:

1. The energy conversion is different: the electrical energy of the pure resistance circuit is all converted into internal energy; In addition to the internal energy, the electrical energy of impure resistive circuits can also be converted into other energy. For example, light energy, heat energy, and other energy.

2. The calculation method is different: the power calculation formula of pure resistance circuit can be p=ui=w t=i r=u r, and the electric heating can be used q=w=i rt=u rt=uit; The electrical power of non-pure resistive circuits can only be calculated using p=ui=w t, and electric heating can be used q=i r.

3. The relationship between work and heat is different: the current work w of a pure resistance circuit is equal to the heat q emitted by this part of the circuit, that is, w = q; The current work w of the impure resistive circuit is greater than the heat q emitted by this part of the circuit, that is, w q.

4. Ohm's law is applicable differently: pure resistance circuits are circuits that can be established by Ohm's law; A non-pure resistive circuit is a circuit where Ohm's law cannot be true.

5. The components of the circuit are different: there are only resistors, power supplies and wires in pure resistive circuits; Non-pure resistive circuits have other components besides resistors, power supplies, and wire elements.

Answer: Pure resistance circuitPure resistance circuit is a circuit that only generates heat in the energized state, that is, all the electrical energy in the energized state is converted into the internal energy of the circuit resistance, and no external work is done. In a pure resistive circuit, there are only resistors, power supplies, and wires, and the electrical energy cannot be converted into forms of energy other than thermal energy. (For example:.)

Electric lights, soldering irons, irons, etc., they just heat up. They are both purely resistive circuits. Non-Pure Resistance CircuitsHowever, engines, electric fans, etc., do work on the outside in addition to heat generation, so these are non-pure resistance circuits.

In a non-pure resistive circuit, part of the electrical energy is converted into the internal energy of the resistance, part of it is converted into other forms of energy, such as engines, fans, etc., and part of the electrical energy is converted into mechanical energy. In pure resistance circuits (such as incandescent lamps, electric stoves, rice cookers, electric soldering irons, electric blankets, electric irons, electric motors with stuck rotors and other circuits), electric work is equal to electric heat, that is, w q pt uit i rt u t r The electrical energy consumed in non-pure resistance circuits (including motors, electric fans, refrigerators, induction cookers, electrolytic cells, battery charging, fluorescent lamps, etc.) is not only converted into internal energy, but also part of it is converted into mechanical energy (such as electric motors) or chemical energy (such as electrolytic cells).

The electric field is just the beginning.

After that, your teacher will give you a unified lecture after learning.

This part should be explained at least 4-5 times.

Just listen to it.

Question: Okay, okay, thank you, teacher.

First, the nature is different.

1. Pure resistance circuit is a circuit with only resistive elements, or inductance and capacitance components in addition to the power supply, but their impact on the circuit is negligible. Voltage and current are at the same frequency and in the same phase. Resistance converts all the energy obtained from the power supply into internal energy, and this kind of circuit is called a pure resistance circuit.

2. A non-pure resistance circuit is a circuit that is in the state of energizing, which has heat release and other forms of work on the outside except for internal energy.

Second, the classification is different.

1. Pure resistance circuits: electric lights, electric soldering irons, irons, electric stoves, etc., they just heat up. They are both purely resistive circuits.

2. Non-pure resistance circuits: generators, motors, electric fans, electrolytic cells, etc., in addition to heating, also do external work, so these are non-pure resistance circuits.

Third, the calculation formula is different.

1. Pure resistance circuits: their power can be calculated by p=ui=w t=i r=u r, and electric heat can be calculated by q=w=i rt=u rt=uit and formula.

2. Non-pure resistance circuit: electric power calculation can only use w=uit=pt, electric power calculation can only use p=ui=w t, and electric heating can use q=i rt

First, the characteristics are different.

1. Pure resistance circuit: in addition to the power supply, there is only a circuit with resistive elements.

2. Impure resistance circuit: In the impure resistance circuit, part of the electrical energy is converted into the internal energy of the resistance, and part of it is converted into other forms of energy.

Second, the calculation formula is different.

1. Pure resistance circuit: q i rt=uit pt uq.

2. Non-pure resistance circuit: the power can be calculated by p=ui=w t=i r=u r, and the electric heat can be calculated by q=w=i rt=u rt=uit and the formula.

Third, the status is different.

1. Pure resistance circuit: In addition to the power supply, there are only resistive elements in the circuit, or there are inductance and capacitance elements, but their impact on the circuit is negligible. Voltage and current are at the same frequency and in the same phase. The resistor converts all the energy obtained from the power supply into internal energy.

2. Impure resistance circuit: In the state of energizing, there are circuits that radiate heat and do other forms of work on the outside except for internal energy.

The pure resistance circuit is this circuit, and all the electrical energy consumed is converted into heat energy, which belongs to the pure resistance circuit, and the impure resistance circuit is the circuit that converts electrical energy into mechanical energy or chemical energy.

The pure resistance circuit is a circuit that only generates heat in the energized state, that is, all the electrical energy in the energized state is converted into the internal energy of the circuit resistance, and no external work is done. For example: electric lights, soldering irons, irons, etc., they just heat up. They are both purely resistive circuits.

Non-pure resistance circuits, such as motors, electric fans, etc., do work externally in addition to heat generation, so these are non-pure resistance circuits. In a non-pure resistive circuit, part of the electrical energy is converted into the internal energy of the resistance, and part of it is converted into other forms of energy, such as motors, fans, etc., and part of the electrical energy is converted into mechanical energy.

Pure electric positive circuits mainly refer to electric heaters, and the current passing through the circuit only generates heat and is not converted into other forms of energy. Such as: electric kettle, electric ferrochrome, electric rice cooker, electric blanket, electric stove, incandescent lamp, etc.

In addition to generating heat, the electric current emits light, makes sound, produces chemical changes, and is converted into mechanical energy.

In pure resistive circuits, there is Ohm's law for partial circuits, and in impure resistors, there are Ohm's laws for full circuits. The expressions are not the same.

One is that all the electrical energy is converted into heat energy, and the other is that the electrical energy is converted into heat energy and other forms of energy, such as electric motors, which are converted into heat energy and mechanical energy, and there are electrolyzers.

Pure resistive circuits are used to add hot things to the mountain, like electric heaters or something, not ......It's just an ordinary circuit, like a TV or something.

In the presence of an AC component, pure resistive circuits have no phase shift and no reactive power, while non-pure resistive circuits have phase shifts and usually also generate reactive power.

There are only resistive elements in pure resistive circuits, and there are capacitive or inductive elements or both in non-pure resistive circuits.

Pure resistors are ordinary electric heating or resistive elements. Inductive capacitors, such as motors, motors, are not resistors.

A purely resistive circuit is a circuit in which the electrical consumer in the circuit has only resistance, which can be solved by Ohm's law.

A non-pure resistive circuit is a circuit in which there is not only resistance, but also circuits of other electrical appliances, such as inductors.

An electric motor circuit is a non-pure resistive circuit.

The difference between the two is whether all the current in the circuit is converted into rent-only heat. Pure resistance is the one that can convert all of it into heat. It is not a pure resistor that is also converted into light energy (such as a light bulb) and kinetic energy (an electric motor).

The difference between them is; The components used in pure resistive circuits are linear components. Circuits that are not purely resistive can have a mixture of nonlinear elements and linear elements.