Verified Solution • 2025–26 Session moderate

QJEEM24Phcd3a: JEE Main 2024 Physics - Class 12 JEEM24Phcd3a Solution: An infinitely long positively charged straight thread has a…

An infinitely long positively charged straight thread has a linear charge density λ Cm−1\lambda \mathrm{~Cm}^{-1} . An electron revolves along a circular path having axis along the length of the wire. The graph that correctly represents the variation of the kinetic energy of electron as a function of radius of circular path from the wire is :

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/c68924d9a27f276b7f9f3b1e24ac32c8d752400556b3c5a2e366764a4a9eb9a7.webp
  • B https://ik.imagekit.io/novatra/photos/713a997fa87c216b479b30d81dbb3830434e89c55683169a42743a234ecb92ae.webp
  • C https://ik.imagekit.io/novatra/photos/9841827bfa1dbc6d0fbd9b63966339ccc5f657932b5c138c411439e6adbb6bb3.webp
  • D https://ik.imagekit.io/novatra/photos/2171e01856f4a5cc466544cb10481845dc9ba4cb98d83a6249f03b17ea4ab4e6.webp

Step-by-Step Verified Solution

The electron revolves in a circle, so its kinetic energy remains same.

So option (2) best represent the given situation.

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