3 years, 4 months ago
when nothing is given, don't we assume it non-conducting rather than conducting.. and that way, even you know the answer is (C).
just think, it talks of a wire and a point charge, where does it have to do anything with taking a conducting plane..
but, yes, if it was conducting you would be right..
Log in to reply
Usually in multicorrect questions I get pretty nervous if I get only one option correct. So if I had given the test, I too would have assumed it to be conducting just by seeing that 3 options matched! (I'm not saying that only one option can never be correct in multicorrect questions, but usually there are more than one correct options)
Another ambiguous one is q.59 Paper 1 code 1. The question doesn't specify that the mentioned plane is XY anywhere.
You people can thrash me for what I'm gonna say but... Give me one reason why the field should be different if the sheet is conducting? Its a sheet, its infinitely thin, even if you distribute the "internal" charge in the conductor, it will superimpose onto itself & cancel... then why should it matter whether conducting or not o_O?
& I guess they have explicitly used "plane" to remove ambiguity, if what you people are saying is correct, doesn't it mean the field due to a point charge is gonna be different, because that point charge is conducting? say a conducting metal ion particle??
@Karthik Kannan , Did you send them an e-mail about this issue?
No, I haven't. I was wondering whether I should.
There's no harm in sending them an email. If they consider your appeal, well and good! If they don't, your score won't be affected in anyway ;)
Looks like I have been really lucky with the two recent problems shared by Parth, Karthik and Jatin. I too was puzzled in regards with the formula of electric field to be used. Since nothing was mentioned, I went off with the non-conducting case.
I too answered ABC