# Your question: Why a transformer does not work by using direct current power supply?

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## Why DC supply is not used in transformer?

As mentioned before, transformers do not allow DC input to flow through. … This is because a change in current cannot be generated by DC; meaning that there is no changing magnetic field to induce a voltage across the secondary component.

## What would happen if a transformer is connected to a DC supply?

If the primary of a transformer is connected to the DC supply, the flux produced in the primary will be of constant magnitude because of DC current. … So the transformer can be damaged due to this high current, if it is connected to DC supply.

## Why does not a transformer work with direct current DC )? Why is alternating current AC required?

The basic reason is that you need a changing magnetic field in order to induce a voltage in a loop of wire. So transformers work with AC since the magnetic field is oscillating at 60 Hertz. If you plug the transformer into a DC circuit, the magnetic field is a constant, after a short initial spike.

## Can a transformer be used to transform direct voltage and direct current?

Transformers “transform” voltage from one level to another by means of electromagnetic inductance, but to change from alternating current to direct one uses a device termed a rectifier. … Voltage and current are not the same thing, of course.

## Why transformers are only used in AC circuits?

transformer work only on ac supply because A transformer needs an alternating current that will create a changing magnetic field. A changing magnetic field also induces a changing voltage in a coil. This is the basis of how a transformer works: The primary coil is connected to an AC supply.

## What is the difference between alternating current AC and direct current DC?

Alternating Current (AC) is a type of electrical current, in which the direction of the flow of electrons switches back and forth at regular intervals or cycles. … Direct current (DC) is electrical current which flows consistently in one direction.

## What is not possible in a transformer?

a)eddy current c)AC. … also, we cannot use DC current because Dc current is constant current and hence there will be no mutual induction takes place and the transformer won’t work hence DC is not possible in the transformer.

## When a transformer is fed with DC supply then the transformer will?

Explanation: Dc is nothing but ac at zero frequency. So the reactance will be zero and the current will be limited solely by the small resistance of the winding which will produce very high amount of current to flow through the windings, so burning them up.

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## How do you know if a transformer is AC or DC?

A transformer type of current, AC or DC, is given by the symbol located between the voltage and the amperage of the transformer.

## Does a transformer convert AC to DC?

The transformer is used to step down or step up the AC voltage, with the principle of electromagnetic induction. … After increasing or decreasing the AC voltage, the rectification circuit converts the AC voltage to DC voltage. An AC to DC transformer is a simple solution for powering up electronics from the AC mains.