*Question by steve00878*: A step-down transformer is to be used to convert an ac voltage of 105 V to 6 V to power an electric train. If?

A step-down transformer is to be used to convert an ac voltage of 105 V to 6 V to power an electric train. If there are 420 turns in the primary coil, how many turns should there be in the secondary coil?

**Best answer:**

*Answer by jrrymiller*

The voltage ratio is the same as the turns ratio.

6/105 = X/420

X = 6*420/105 = 24 turns

**What do you think? Answer below!**

Comments are closed.