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When alternating current flows through an inductor voltage leads current by a phase angle of 90 degrees what is the physical interpretation of this phenomenon?
The physical interpretation of voltage leading current (by 90o) in an inductor is just that. The instant voltage is applied, the inductor "feels" the applied voltage and responds by "beginning to generate" a reverse voltage (reverse electromotive force or emf, or back emf) which prevents current from flowing for the first instant of time. At time zero, the inductor is infinitely resistive. As time goes on, current is increasing. It is trying to "catch up" to voltage, which is continuing to climb. The back emf is trying to limit current, but it climbs to try to "follow" the increasing voltage. But voltage peaks and starts down. The magnetic field that was building while voltage was climbing (and was "holding back" current flow at the same time) will begin to collapse. The collapsing field generates emf that will try to keep current flowing, so current will continue to increase while voltage is decreasing. The current peaks later on (like 90o later) and then starts to decrease. In a purely inductive circuit to which AC is applied, the current is "chasing" the voltage peaks and is always 90o degrees behind. [There are other ways to look at the situation, but this one is a basic way to interpret the physics.]
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Is electricity a concrete noun?
Yes, "electricity" is a concrete noun because it refers to a physical phenomenon that can be observed and measured. It represents the flow of electric charge, which can be experienced through its effects, such as lighting a bulb or powering devices. Although it is not something tangible like a solid object, it still has measurable properties and impacts the physical world.
Why A synchronous motor is sometimes called a synchronous capacitor Explain?
A synchronous motor can operate as either a Generator or a Motor.When a synchronous motor has current applied to the windings on its rotor and the stator is energized with say a 50hz line supply (with little or no physical load) then the exact amount of excitation provided by the rotor can determine whether the stator displays inductive or capacitive properties.If the rotor is under excited (too Little rotor current) the Synchronous Motor will behave as an Inductor, however if the rotor is over excited then the Synchronous Motor will behave like a Capacitor.Hope this helps
What OSI layer converts the ones and zeros to electrical signals and places these signals on the cable?
physical layer
What is the physical meaning of operating voltage of detector?
What is the physical meaning of Operating Voltage of detector
What is the difference bw logical and physical synthesis?
Logical synthesizes maps a register-transfer levelÊdescription to a set of gates. Physical synthesis implements a netlist on a floorplan and improves the quality of the design.
When alternating current flows through an capacitor current leads voltage by a phase angle of 90 degrees what is the physical interpretation of this phenomenon?
One interpretation is that if you take a capacitor that is not charged, it needs to take some current before any voltage appears across it. Therefore the current must precede the voltage.
Is the formation of snowflakes a chemical or physical property?
This is a physical phenomenon.
Is condensation of water a physical or chemical process?
Condensation is a physical phenomenon.
Is hot and cold a physical change?
Temperature is a physical phenomenon Change of temperature is a physical change.
When a bottle breaks into pieces does it undergo a chemical or physical change?
It is a physical phenomenon.
Is it a chemical or physical when silicon seed crystals grow into silicon ingots?
A physical phenomenon
Is UV radiation penetrating the skin is a physical or chemical change?
This phenomenon is of physical nature.
Is light a physical thing?
Yes, light is a physical phenomenon that consists of electromagnetic waves.
Is rain puring down a chemical change?
No. It is a physical phenomenon.
Is water absorbed by a paper towel a physical or chemical change?
It is a physical change.
When water is boiled is it a chemical or physical change?
Boiling is a physical phenomenon, a change of phase.
Spontaneous emission of radiation from an atom?
This physical phenomenon is called radioactivity.
