- #1

jaus tail

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I've been reading transformers and this question came in my mind. I'm unable to find a satisfactory answer.

Why does the current increase in a step down transformer? I am aware of V1I1 should be equal to V2I2, but I was looking for a physical reason for the current to increase.

Current is flow of electrons along a conductors, the electrons vibrate and transfer energy to the neighboring electron and thus current flows.

So in Step Down Transformer, what is the physical reason for the current to increase?

You have less number of turns.

A fellow student says, since number of turns is less, you have each turn of more cross section area to occupy full height of core. So since turns have more cross section area, the resistance is less and current flow increases by ohm's law.

I read many books, but all gave reason of VI should be same on both sides. But this is mathematical reason, can anyone help me with a physical reason why current should increase if you have less number of turns on secondary.

Thanks in advance.

I am a student of electrical engineering.