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Is induced voltage is always the opposite polarity opposes or subtract from the applied voltage?
Induced voltage is generally described by Lenz's Law, which states that the direction of induced voltage (or current) will be such that it opposes the change in magnetic flux that produced it. This means that when an external voltage is applied, the induced voltage acts in opposition to that applied voltage whenever there is a change in magnetic conditions. However, the total voltage in the circuit is the algebraic sum of the applied voltage and the induced voltage, so it can be seen as subtracting from the applied voltage in terms of net effect.
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What is the amount of axial stress on a member which is subjected to a sudden load when compared to load applied gradually?
The maximum stress induced in a body due to suddenly applied load is twice the stress induced when the same load is applied gradually
Who stated the law that the direction of induced current is always such as to oppose the change producing it?
This law was stated by Heinrich Friedrich Lenz (1804-1865). The law is stated as: The polarity of induced e.m.f is such that it tends to produce a current which opposes the change in magnetic flux that produces it.
Difference between back EMF and induced EMF?
An induced electromotive force (emf) is an induced voltage. Voltage (emf) causes current flow, and this induced voltage will cause a current that is called the induced current.We might also add that the induced current will cause a magnetic field to expand about the current path, and this field will "sweep" the conductor. The sweeping of the conductor by that expanding magnetic field will set up an emf that will oppose the emf that was creating it.CommentTechnically, there is no such thing as an 'induced current'. It is voltage that is induced. Any current flows as a result of that induced voltage being applied to a load. But that current is certainly NOT induced!
What is induction of electric current?
According to Farady's law, whenever the flux linking with the coil changes, emf will induce in that coil.Actually the material should oppose the flux changes, that opposition is the induced current. Induced current will set own flux, opposite to that of the flux changes.For further details, refer lenz law.
What will happen to the transformer if double the rated voltage is applied to the winding during the open circuit test?
no voltage will be induced on the secondary side of the motor as the windings will become saturated.
How you can find positive and negative in a transformer?
There is no positive and negative on a transformer. Transformers will only pass AC (alternating current), due to the fact that induction will only occur with a moving field. The current has to be changing polarity and intensity continuosly, for the current to be induced in the windings. Both terminals on the output vary, with relation to each other. Put DC into a transformer and the coils will saturate, overheat and probably burn out.
What is the amount of axial stress on a member which is subjected to a sudden load when compared to load applied gradually?
The maximum stress induced in a body due to suddenly applied load is twice the stress induced when the same load is applied gradually
What happen when a negatively charged item gets near a neutral item?
The neutral object will probably get an induced polarity.
What is induced force?
the positive end of one molecule attracts the mobile electrons of the nearby non polar molecule in this way polarity is induced these forces called as dipole-induce dipole forces
What is an induced effect that is the exact opposite of that which was therapeutically intended?
A paradoxical effect is one that is the opposite of that which was therapeutically intended.
What is the induced current in the loop when a magnetic field is applied?
When a magnetic field is applied to a loop, it induces an electric current in the loop.
What is the induced emf in the coil when a magnetic field is applied?
When a magnetic field is applied to a coil, it creates an induced electromotive force (emf) in the coil. This emf is generated due to the change in magnetic flux through the coil, according to Faraday's law of electromagnetic induction.
Who stated the law that the direction of induced current is always such as to oppose the change producing it?
This law was stated by Heinrich Friedrich Lenz (1804-1865). The law is stated as: The polarity of induced e.m.f is such that it tends to produce a current which opposes the change in magnetic flux that produces it.
What happens in a magnetic reversal?
During a magnetic reversal, the Earth's magnetic field weakens, flips, and then eventually re-establishes itself with the opposite polarity. This process can take thousands of years to complete and can have various effects on navigation systems, animals relying on Earth's magnetic field, and even the climate.
What are the reasons why a current is induced in a coil?
Current is not induced into a coil. It's voltage that is induced into a coil. If the coil is connected to a load, or even short circuited, then a current will flow as a result of the induced voltage -but it's the voltage, not the resulting current, that's induced!Voltage is induced into a coil because the the changing magnetic field, due to the change in current (0 to Imax or vice versa) applied to that coil. The process is called 'self induction'.
Difference between back EMF and induced EMF?
An induced electromotive force (emf) is an induced voltage. Voltage (emf) causes current flow, and this induced voltage will cause a current that is called the induced current.We might also add that the induced current will cause a magnetic field to expand about the current path, and this field will "sweep" the conductor. The sweeping of the conductor by that expanding magnetic field will set up an emf that will oppose the emf that was creating it.CommentTechnically, there is no such thing as an 'induced current'. It is voltage that is induced. Any current flows as a result of that induced voltage being applied to a load. But that current is certainly NOT induced!
Do you add electrical supply voltage and induced voltage of a coil to get total voltage on the coil?
The induced voltage acts to oppose any change in current that is causing it. So, if the current is increasing, then the induced voltage will act in the opposite direction to the supply voltage; if the current is decreasing, then the induced voltage will act in the same direction as the supply voltage.
