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# Finding level in particular topics

With the new version of Brilliant coming in, I am unable to find the "Find your level" option for the topics which I have started following recently. Similar problem persists for the subjects in which I have solved till a certain level but not yet joined. Please guide me.

3 years, 3 months ago

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It takes a short time for us to determine what level to place you into.

As a guide, when you have correctly solved 5-10 problems in the topic, we will display your rating. You will get a notification about it. Staff · 3 years, 3 months ago

Thank you! I would also like to know what I should do if I feel that a solution submitted to a problem (along with its answer) is Incorrect. Can I challenge a solution in any way? · 3 years, 2 months ago

If you are referring to the practice section, you can send me an email.

If you are referring to the problems in the main interface, it would be better to engage the solution writer in a discussion. You can use the report button if necessary. Staff · 3 years, 2 months ago

Some weeks ago, I posted a problem named 'Gwen Stacy to the rescue on brilliant in a set named themed problems for the week. Later on I decided to remove the problem from this set so that it will appear in the 'Problems for you to try' section that appears at the bottom of each problem. Now I cannot find the problem in the search box.

The link for this problem was fortunately saved by me. Please can you recover this problem? It was completely my creation. :)

The link: : https://brilliant.org/community-problem/gwen-stacy-to-the-rescue/?group=NIsnm4Kp4t8S · 3 years, 1 month ago

What is the Brilliant archive? Most of the physics [Electricity and magnetism] problems have this message saying, "This problem is a part of the brilliant archive and is under construction right now". Most of David Mattingly's problems are in this archive [my observation]. Is it that everyone is encountering this problem? If so when will these problems be available for solving? · 3 years, 2 months ago

Hi Pinak – see my response here. Staff · 3 years, 2 months ago

Thank you. I would also like to know why most of the higher rated problems have been converted to problems of 'brilliant square'. Almost all of David Mattingly's problems have been converted when he himself is not a member of 'brilliant squared'. (I checked his profile) · 3 years, 2 months ago

Hi Pinak, there are more details here. David Mattingly is a member of our staff. Staff · 3 years, 2 months ago

Some weeks ago, I posted a problem named 'Gwen Stacy to the rescue on brilliant in a set named themed problems for the week. Later on I decided to remove the problem from this set so that it will appear in the 'Problems for you to try' section that appears at the bottom of each problem. Now I cannot find the problem in the search box.

The link for this problem was fortunately saved by me. Please can you recover this problem? It was completely my creation. :)

(Calvin's edit)

The text of the problem is:

The evil Electro has caught Spidey and has put him in a spherical metallic cage of radius 'R'. Eventually, Electro decides to take some nap after his awesome fight with Spidey. He ties Spidey to a non conducting pole At the center of the metallic cage and dozes off to sleep at some distance 'a' besides Spidey. Spidey with his agility manages to break off from the pole but in order to escape from the cage he must bring the potential of the cage to zero in order to avoid an electric shock. (The spherical metallic cage acquires a potential due to the charge on Electro 'Q')

On the other hand Gwen Stacy tries to help her boyfriend. She borrows a charge accumulator from her scientist friend and tries to bring the cage's potential to zero. For this she needs to know how much charge she must accumulate and where from Spidey should she stand in order to do so.

Can you help this pretty lady rescue her friend?

Details and assumptions

Take $$a = \frac{R}{2}$$ · 3 years, 1 month ago

Hi Pinak,

I see that you decided to delete the problem. We are unable to undo your deletion. You can repost the problem.

I've included the text of your problem in your comment, so that you can copy it directly. Staff · 3 years, 1 month ago

I wanted the problem to be removed from the set but it got deleted. anyways thanks a lot for providing the text. I guess I will have to write its solution again! · 3 years, 1 month ago