What coil is the primary coil and which is the secondary coil?

The secondary current depends upon the load, not the primary current. Once you know the secondary current, you can then work out the primary current.

If I am not wrong then you have asked about a transformer. And its a current transformer. By theory of voltage transformer we know that Vs/Vp = Ns/NpSo for answering your question we need the value...

You cannot determine the voltage induced into the secondary winding of a transformer unless you know its turns ratio. In other words, you haven't supplied sufficient information to answer the...

It's sometimes possible to use the secondary as the primary in transformers as long as you keep the overall power (wattage) the same or lower, and the AC frequency the same. ex. A 12 volt AC @ 10...

Primary and secondary are only terms of convenience based on the ratings and purpose of the transformer. If a transformer is labeled 120 to 240 volts, just pick a winding and apply 120 VAC. If the...