Question 1

Is a transformer for AC or DC?

Accepted Answer

A transformer is designed to work with alternating current (AC) only. It relies on the principle of electromagnetic induction, which requires a changing magnetic field—something that only AC can provide. Direct current (DC) does not create the varying magnetic field needed for a transformer to function, so transformers do not work with DC unless special electronics like inverters or converters are used.

Question 2

What does an electrical transformer do?

Accepted Answer

An electrical transformer changes the voltage level of an alternating current without altering its frequency. It either steps up the voltage for efficient transmission over long distances or steps down the voltage for safe use in homes and businesses. Transformers also help isolate circuits, protect sensitive equipment, and ensure energy is distributed efficiently across electrical networks.

Question 3

What is the working principle of an Electricity Transformer?

Accepted Answer

The working principle of a transformer is electromagnetic induction. When an alternating current flows through the primary coil, it generates a changing magnetic field. This magnetic field passes through a core and induces a voltage in the secondary coil. The amount of voltage induced depends on the number of turns in each coil, allowing the transformer to either increase or decrease voltage based on the turn ratio.

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