If the secondary coil of a transformer contains more loops than the primary coil,then it is a
A)step-up transformer.
B)step-down transformer.

Question

Quizplus · Accepted Answer

A transformer works based on the principle of electromagnetic induction, that is, when the current in the primary coil changes, it induces a changing magnetic field, which in turn produces a voltage in the secondary coil. The ratio of the number of turns in the primary coil to the number of turns in the secondary coil determines the output voltage from the transformer.

In a step-up transformer, the secondary coil has more turns than the primary coil, which means that the output voltage is greater than the input voltage. This type of transformer is used to increase voltage levels, for example, in power transmission lines, where high-voltage transmission reduces power losses due to resistance in the cables.

On the other hand, in a step-down transformer, the secondary coil has fewer turns than the primary coil, which means that the output voltage is less than the input voltage. This type of transformer is used to decrease voltage levels, for example, in power supplies for electronic devices, where a high voltage is first stepped down to a lower voltage suitable for the device.

If the Secondary Coil of a Transformer Contains More Loops