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QJEEM22Ph0e30: JEE Main 2022 Physics - Class 12 JEEM22Ph0e30 Solution: As shown in the figure, a metallic rod of linear density 0.45…

As shown in the figure, a metallic rod of linear density 0.45 kg m−1 is lying horizontally on a smooth inclined plane which makes an angle of 45∘ with the horizontal. The minimum current flowing in the rod required to keep it stationary, when 0.15 T magnetic field is acting on it in the vertical upward direction, will be :

{Use g=10 m/s2}

JEE Main 2022 (Online) 28th July Morning Shift Physics - Magnetic Effect of Current Question 80 English

Multiple Choice Options

  • A 30 A
  • B 15 A
  • C 10:00 AM
  • D 3:00 AM

Step-by-Step Verified Solution

JEE Main 2022 (Online) 28th July Morning Shift Physics - Magnetic Effect of Current Question 80 English Explanation

mg×12=ilB2

⇒i=mgBl

=0.45×100.15=30A

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