JEE Main 2018 — Magnetic Effects of Current Question with Solution
JEE Main 2018 (15 Apr Shift 2 Online)
Question
A current of is flowing on the sides of an equilateral triangle of side . The magnetic field at the centre of the triangle will be:
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Here, side of the triangle, , current,
magnetic field at the centre of the triangle ' ' ?
From figure,
Magnetic field, Putting value of and and we will get net magenetic field
Magnetic field, Putting value of and and we will get net magenetic field
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Magnetic Effects of Current chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2018, covering the Magnetic Effects of Current chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.