Hi Martin,
Yes, the whole reason to use Tor is to conceal your IP. Your configuration is correct. Some websites will detect that you conceal your IP, and then not allow access. This lets you know what their business is - in the case of Google, their business is creating dossiers on their users. Can't do that if the IP is concealed. So use another search engine - maybe DuckDuckGo.com, or lite.qwant.com.
Regards,