Vikas TU
Last Activity: 5 Years ago
You do not need any conductor/anything at all to have an induced emf caused by a changing magnetic field. There will be an induced EMf between two points in a vacuum if there is an appropriate changing magnetci field. Of course, if there is no conductor there, then no charges move and there is no observable effect. If there is a partial circuit- no current flows and not much to detect. A complete ring provides acurrent path - then a current flows and you get effects that can be observed, eg heating.