I have a work permit visa from the employer in Germany- Berlin. Will my wife get a dependent visa?

1. Is this work permit from the employer, limited only to this company? ie) With this work permit visa (assuming that is valid for a year from the German state), can i search for other companies as well?

If you receive a work permit then it is limited to a single company for 2 years. After this time and can get this restriction lifted (you have to apply for it) and you are then free to work for any employer in Germany. If you want to change employer before this then you need to apply for a new work permit for that specific employer.

You are also able to convert this to a Blue card while you are in Germany as long as you meet the requirements. But even a Blue card is limited to a specific employer for the first two years, and you can only change your job with permission from the Ausländerbehörde (ABH) / Immigration office.

If you qualify for a blue card then you should apply for that rather than a work permit.

2. Will my wife get a dependent visa along with my work permit visa ? If so, can anyone help me with links or steps on how she can apply for Dependent visa.

Once you are in Germany you can apply for a family reunion visa. But you must already be living in Germany before you can apply, and the application will take several months.

There are requirements that you must both meet, such as the requirements for health insurance for both of you, the size of the apartment, that you earn enough, and your wife will need basic German knowledge (A1 level).

See: https://www.germany-visa.org/family-reunion-visa/

3. Once she has a dependent visa, can that visa be converted to EU Blue card ? (Just like how I can convert from my work permit to EU visa by showing that i have some Euro's in my account or that i am a highly skilled worker)

No it doesn't work like that.
But, assuming she gets a family reunion visa and then lives in Germany then she will be able to work in Germany on this visa if she wants to with no issues.

With no work contract I doubt if you can apply for Eu Blue card but if you have any offer and accept it then definitely. Do you have any offers or are searching for job? You must not have left your current job. You can go to the auslanderbehorde and tell them about your situation. And also you can talk to your current employer and request them not to invalidate your current visa, if they agree good.

1. Yes. The moment you leave the current employer your work permit becomes invalid. Yes you can definitely search for other job.

2. Yes she can. You both can together apply i.e you for work visa and your wife dependent visa. Kindly check the german embassy website.

3. No. Not unless she meets all the requirements for a blue card. Kindly go through the eligibilty criteria for a Blue Card. You have to be highly qualified, skilled and must have a local contract. Merely showing a few 1000 euros in your bank account does not make you eligible for eu blue card.