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What else can I help you with?
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 difference between 24vac and 240 v ac coil?
These are two different rating coils. I will not take 24V and 240V ac coils in this explanation, I will take low voltage ac coil and high voltage ac coil in the explanation in general. Low voltage ac coils have low insulation in general compared to the high voltage coils since we need more insulation for the high voltage coils. Low voltage ac coils have less no of turns and less diameter of coil compared to high voltage ac coils. But the thickness of the conductor used for the ac coil depends on the current rating of the coil only it does not depends on the voltage.
What could cause voltage in a coil that has no current running through it?
A: A coil does store energy and this energy will be released after the current is removed is evident by a reversal of voltage across it before it collapse finally with less and less voltage <<>> Using a volt meter to ground, you would see the supply potential coil voltage on the coil end, if the return wire from the coil was open.
Why induction type instrument canot be used for dc measurements?
Induction is a property of voltage changes, which does not occur with Direct Current devices. There are exceptions, such as the coil of an automobile, which charges up to a high voltage between ignition discharges, but the voltage supplying the coil does not vary.
Why does the induced emf known as back emf?
In a dc motor the voltage generated in the armature acts against the supply voltage. The current is the voltage difference divided by the armature resistance. If the rotor is turned faster so that the back emf exceeds the supply voltage, the current goes the other way and the motor has become a generator.
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 current coil and voltage coil?
Oh, dude, current coils and voltage coils are just like the Beyoncé and Jay-Z of transformers. The current coil measures the current flowing through a circuit, while the voltage coil measures the voltage across a circuit. They're basically the dynamic duo of electrical measurements, keeping things in check and making sure everything runs smoothly.
What is the highest and lowest voltage of an electromagnet?
The strength of an electromagnetic is determined completely by the current through its coil, and doesn't depend on the voltage across the coil. The voltage will be (current) x (resistance of the coil).
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'.
What is difference between 24vac and 240 v ac coil?
These are two different rating coils. I will not take 24V and 240V ac coils in this explanation, I will take low voltage ac coil and high voltage ac coil in the explanation in general. Low voltage ac coils have low insulation in general compared to the high voltage coils since we need more insulation for the high voltage coils. Low voltage ac coils have less no of turns and less diameter of coil compared to high voltage ac coils. But the thickness of the conductor used for the ac coil depends on the current rating of the coil only it does not depends on the voltage.
What current will flow through the heating coil when the heater is plugged in?
The current flowing through the heating coil will depend on the resistance of the coil and the voltage of the power source. Using Ohm's Law (I = V/R), where I is the current, V is the voltage, and R is the resistance, you can calculate the current. The higher the voltage or lower the resistance, the higher the current.
Is flow of induced current necessary when induces emf is being produced?
There is no such thing as an 'induced current'. Voltages are induced, not currents. If a voltage is self-induced into a coil, then that voltage will oppose any change in current. If a voltage is mutually-induced into a separate coil, no current will flow unless that coil is connected to a load.
Is flow of induce current necessary when induce emf is being produce?
There is no such thing as an 'induced current'. Voltages are induced, not currents. If a voltage is self-induced into a coil, then that voltage will oppose any change in current. If a voltage is mutually-induced into a separate coil, no current will flow unless that coil is connected to a load.
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.
An electric current can be genrated by moving a wire coil in a magnetic field?
Yes, an electric current can be generated when a wire coil is moved in a magnetic field due to electromagnetic induction. As the coil cuts through the magnetic field lines, it creates a voltage difference across the ends of the coil, resulting in the flow of electric current. This phenomenon is described by Faraday's law of electromagnetic induction.
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.
What could cause voltage in a coil that has no current running through it?
A: A coil does store energy and this energy will be released after the current is removed is evident by a reversal of voltage across it before it collapse finally with less and less voltage <<>> Using a volt meter to ground, you would see the supply potential coil voltage on the coil end, if the return wire from the coil was open.
