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QJEEM23Phd7b8: JEE Main 2023 Physics - Class 12 JEEM23Phd7b8 Solution: A metallic rod of length 'L' is rotated with an angular speed…

A metallic rod of length 'L' is rotated with an angular speed of 'ω' normal to a uniform magnetic field 'B' about an axis passing through one end of rod as shown in figure. The induced emf will be :

JEE Main 2023 (Online) 24th January Evening Shift Physics - Electromagnetic Induction Question 40 English

Multiple Choice Options

  • A 12B2L2ω
  • B 12BL2ω
  • C 14BL2ω
  • D 14B2Lω

Step-by-Step Verified Solution

Velocity of centre of rod⁡v=ωL2\operatorname{rod} v=\frac{\omega L}{2}

So, emf=B⋅vL\mathrm{emf}=B \cdot v L =BωL22

JEE Main 2023 (Online) 24th January Evening Shift Physics - Electromagnetic Induction Question 40 English Explanation

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