Why is my question "Electrical resistance calculator question" on hold ? What does this mean ? How can i improve it ? Here is the link to my question
For general guidance on what "on hold" means, see What is a “closed”, “on hold”, or “duplicate” question? at the mother meta.
For specific guidance about why your individual question was put on hold, see the link included in the banner that marks the post as on hold, How do I ask homework questions on Physics Stack Exchange?.
Generally, if an event X happens that affects your posts and it comes accompanied with a banner Y linking to a detailed explainer post Z (in this case, here), then jumping on the Ask button without reading the guidance first isn't a particularly useful course of action.