0
What else can I help you with?
What does it mean when voltage and resistance are in phase?
The voltage across a resistance is in phase with the current through the resistance because the resitance in non-reactive, i.e. non-inductive and non-capacitative. In the inductive case, the load resists a change in current. In the capacitative case, the load resists a change in voltage. In the resistive case, the load current follows the voltage with no delay, hence there is no phase differential.
When does an electromagnet produce a magnetic field?
A magnetic field is generated whenever a current is passing through a wire.
What is the electrical resistance offered by a current-carrying element that produces a drop of one volt when a current of one ampere is flowing through it?
One ohm.
What are advantages of reactive power?
Real power is power that is used to do work. This is the power a light bulb uses to glow. Reactive power is power that is stored in one part of the AC voltage wave, and released in another. This causes the power to appear as a phase shift, and is generally caused by inductive or capactive loads. With regard to the power system, you can also get reactive power flowing due to unequal source voltages. Under these conditions, the apparent impedance of one source to the other will appear reactive/inductive, resulting in reactive power flow.
Why in inductor the current lags the voltage?
Because in an AC circuit, a capacitor opposes the change of voltage in at. At the peak of the voltage waveform, there is no change (it is nearly flat), so at this same point in time, the current waveform is at zero. Likewise, when the voltage waveform crosses zero, it is changing at its fastest rate, so the current is at its peak. If you draw these two waveforms next to one another, you will see the voltage has the appearance of being behind the current - hence the term 'lag'.
What will be the power of a purely inductive circuit?
Its 'true power', expressed in watts, will be zero, while its 'reactive power', expressed in reactive volt amperes, will be the product of the voltage across the inductor and the current through it.
What is a condition for resonance for an electrica circuit with reactive element?
For resonance to occur in an electrical circuit with a reactive element, the reactive element's reactance needs to be equal and opposite to the circuit's impedance. This occurs when the capacitive and inductive reactances cancel out, resulting in a net impedance that is purely resistive. At this point, maximum current flows through the circuit, enhancing certain frequencies.
Fan is inductive load or resistive load?
A fan is typically considered an inductive load due to the presence of the motor within it. Inductive loads, such as motors, create magnetic fields when current flows through them, which can cause a phase shift between voltage and current. This phase shift results in a lagging power factor, which is a characteristic of inductive loads. Resistive loads, on the other hand, have a power factor of 1 and do not cause phase shifts.
What type of field is produced when reactive current through the capacitive load?
Electric field is produced
How inductive effect is created in ethylene glycol?
The inductive effect is created through
What does it mean when voltage and resistance are in phase?
The voltage across a resistance is in phase with the current through the resistance because the resitance in non-reactive, i.e. non-inductive and non-capacitative. In the inductive case, the load resists a change in current. In the capacitative case, the load resists a change in voltage. In the resistive case, the load current follows the voltage with no delay, hence there is no phase differential.
What is inductive current?
Induction: Uses electrical energy to create a magnetic field and the magnetic field restores energy back to the line when it collapses.Electrical Theory, Tom Hernry, pp26
What does electric current produce?
Electric current produces magnetic fields around the conductor through which it flows, according to Ampère's law. Additionally, electric current also generates heat due to the resistance of the material through which it passes.
What is working principle of inductor?
A changing current through an inductor induces a voltage into the inductor, the direction of which always opposes the change in that current.So, in a d.c. circuit, an inductor will oppose (not prevent) any rise or fall in current, although the magnitude of that current will be determined by the resistance of that inductor, not by its inductance.In an a.c. circuit, because the current is continuously changing both in magnitude and in direction, it acts to continuously oppose the current due to its inductive reactance. Inductive reactance is proportional to the inductance of the inductor and the frequency of the supply. The vector sum of the inductive reactance of the inductor and the resistance of the inductor, is termed the impedance of the inductor. Inductive reactance, resistance, and impedance are each measured in ohms.
What is the methord to extract reactive metals fom their compoundsby passing a current through them?
This process is known as electrolysis.
What produces movement when a current passes through it?
Did you know monkeys came from the moon
Is a light bulb an electromagnet?
No, a light bulb is not an electromagnet. A light bulb contains a filament that produces light when current flows through it, whereas an electromagnet is a device that produces a magnetic field when current flows through a coil of wire.
