0
where L is the inductance of the coil, measured in henrys, and dI/dt means 'change of current divided by change of time'. The minus sign indicates that the induced voltage opposes the change in current.
What else can I help you with?
What is the different between 3phase plus N generator coil and motor coil?
Generator coils generate the voltage, motor coils use the generated voltage.
Can tesla coils generate an emp?
the coil it is used to produce high voltage, low current, high frequency alternating current electricity. A burst of electromagnetic radiation is something the coil will not do.
What is meant by a primary coil and a secondary coil?
In a transformer, the primary coil is the coil that has voltage applied to it. The secondary coil is the coil that we take voltage from. Transformers are used to step up voltage, step down voltage, or simply to isolate circuits.
What is the difference between current coil and voltage coil?
These terms apply to the coils inside a wattmeter. 'Pressure coil' is an archaic term for 'voltage coil', which is connected in parallel with the supply, while the 'current coil' is connected in series with the load.
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.
What is the different between 3phase plus N generator coil and motor coil?
Generator coils generate the voltage, motor coils use the generated voltage.
How does a Tesla coil work to generate high-voltage electrical currents?
A Tesla coil works by using a transformer to increase the voltage from a power source to create high-voltage electrical currents. This high voltage creates a strong electric field that ionizes the air around the coil, allowing electricity to flow through the air in the form of sparks or arcs.
What is the emf induced at zero field current.and what does it signify?
EMF is the voltage across a coil (or motor) due to changes in the magnetic field. If you change the current the coil will generate a voltage (in the opposite direction of the current). So it is not the field but the change that matters.
Can tesla coils generate an emp?
the coil it is used to produce high voltage, low current, high frequency alternating current electricity. A burst of electromagnetic radiation is something the coil will not do.
What is meant by a primary coil and a secondary coil?
In a transformer, the primary coil is the coil that has voltage applied to it. The secondary coil is the coil that we take voltage from. Transformers are used to step up voltage, step down voltage, or simply to isolate circuits.
How can you obtain three time voltage across potential coil of wattmeter?
The voltage applied to the voltage coil of a wattmeter must not exceed the voltage rating of that coil.
Can low battery voltage damage ignition coil?
Yes, low battery voltage can potentially damage the ignition coil. When the voltage is insufficient, the ignition coil may struggle to generate the necessary spark for ignition, leading to overheating and premature failure. Additionally, repeated attempts to start the engine under low voltage conditions can put extra strain on the coil, further increasing the risk of damage. Regularly maintaining battery health can help prevent such issues.
What is the difference between current coil and voltage coil?
These terms apply to the coils inside a wattmeter. 'Pressure coil' is an archaic term for 'voltage coil', which is connected in parallel with the supply, while the 'current coil' is connected in series with the load.
What would happen to the voltage and the magnet is withdrawn from the coil?
When the magnet is withdrawn from the coil, the magnetic field within the coil will decrease, inducing a voltage in the coil. This induced voltage will create a current in the coil that flows in such a way as to try to maintain the original magnetic field.
How can coils endanger mosquitoes?
A coil is used to generate a high voltage and usually mosquitoes are attracted by a bait heat or smell. When they enter the trap they get zapped and die.
How can 12 volts from a battery be changed to 40000 volts for ignition?
To change 12 volts from a battery to 40,000 volts for ignition, a device called a transformer or an ignition coil is used. The ignition coil steps up the low voltage from the battery to a much higher voltage through electromagnetic induction. When the coil is energized, it creates a magnetic field that collapses when the current is interrupted, inducing a high voltage in the secondary winding, which can generate the necessary voltage for igniting fuel. This high voltage is then delivered to the spark plug to create a spark for ignition.
What is current coil and voltage coil?
The current coil is one through which the current of source can pass. This coil is connected in series. The voltage coil is connected parallel to the applied voltage. In the current coil the quantity of current flowing is proportional to the current flowing in load while in the voltage coil, current flowing is proportional to applied supply voltage. The voltage coil current is independent of current flow in load. For a complete understanding, please refer to a watt meter diagram.
