I will be extremely glad if you have the answer.
Apparently you can't... since this is like the fifth time in two days you've asked.
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Then tell me the minimum voltage required
You have asked a number of questions, and your responses and follow-ups make it very clear that (a) you did not build what you think you built, (b) you don't know how the device is supposed to work, (c) you are unwilling to look up information on your own.
You need to either go to an actual, physical library, and read actual physical books, or you should go to a reputable source (like your school science teacher) and ask these questions in person.
A leyden jar is usually associated with hundreds or thousands of volts. Maybe even hundreds of thousands of volts. It seems to me that you have gotten off track and built a device and have done no research on what it actually is. You should google "leyden jar" and study what it is that you actually have there so you can use it properly.