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Why is there a difference in current in a coil when you apply dc voltage and then AC voltage to it?
A coil has both resistance and inductance. When you apply a d.c. voltage, the opposition to current is the resistance of the coil. When you apply an a.c. voltage, the opposition to current is impedance -the vector-sum of the coil's resistance and its inductive reactance. Inductive reactance is proportional to the inductance of the coil and the frequency of the supply.
Contains both resistance and inductance?
Wire. conductors. Wire made into a coil, an inductor.
What factors increase the inductance of a coil?
what factors on inductance drepends
What The property of a coil that makes it resist changes in current is called?
Inductance
How might you reduce the inductance of an antenna coil?
To reduce the inductance of an antenna coil, you can decrease the number of turns in the coil, as inductance is proportional to the square of the number of turns. Additionally, using a smaller core diameter or increasing the spacing between turns can also lower inductance. Employing materials with lower permeability for the core can further contribute to reducing inductance. Finally, adjusting the coil's shape to be more elongated can help achieve the desired inductance reduction.
Why in coil power factor is low?
A coil of wire acts as an inductor; it will have a very small resistance, and a relatively large inductance. Power factor is effectively the resistance divided by the impedance (made up of resistance and inductance), so the larger the inductance relative to the resistance, the lower the power factor will be.
What are the parameters of choke coil?
inductance and resistance are the parameters of the choke cil
Why is there a difference in current in a coil when you apply dc voltage and then AC voltage to it?
A coil has both resistance and inductance. When you apply a d.c. voltage, the opposition to current is the resistance of the coil. When you apply an a.c. voltage, the opposition to current is impedance -the vector-sum of the coil's resistance and its inductive reactance. Inductive reactance is proportional to the inductance of the coil and the frequency of the supply.
Contains both resistance and inductance?
Wire. conductors. Wire made into a coil, an inductor.
The Q factor of a radio coil is?
if its an LCR circuit then Q=wL/R where W=angular frequency L=Inductance of the coil R=resistance of the coil
What is ideal choke coil?
An ideal choke coil has only inductance. It has zero resistance and no stray capacitance, therefore no resonances.
What is pressure coil capacitance?
The series resistance (swamping resistance and multiplier) in pressure coil circuit has many turns.So in addition to inductance seen before, there are inter-turn capacitance also.If this capacitance effect exceeds the inductance effect, a phase-shift in pressure coil current will cause an error.When pressure coil capacitance roughly equals the inductance, the errors cancel each other.In most cases the inductance is more than the capacitance and thus the shunting capacitor mentioned before will serve the purpose.
Inserting a soft iron core into a coil has what effect on the inductance of a coil?
increase inductance
How do you measure inductance of a coil?
Type your answer here... By use an inductance meter or an inductance bridge
What is inductance comparsion bridge and its application?
It is used to measure the inductance of a coil of unknown inductance.
What factors increase the inductance of a coil?
what factors on inductance drepends
What The property of a coil that makes it resist changes in current is called?
Inductance
