Verified Solution • 2025–26 Session moderate

QJEEM25Ph0f64: JEE Main 2025 Physics - Class 12 JEEM25Ph0f64 Solution: A conducting bar moves on two conducting rails as shown in the…

JEE Main 2025 (Online) 28th January Evening Shift Physics - Electromagnetic Induction Question 4 English

A conducting bar moves on two conducting rails as shown in the figure. A constant magnetic field B exists into the page. The bar starts to move from the vertex at time t = 0 with a constant velocity. If the induced EMF is E ∝ tn, then value of n is _________.

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JEE Main 2025 (Online) 28th January Evening Shift Physics - Electromagnetic Induction Question 4 English Explanation

E=ℓvB

E=2x3×vBE=\frac{2 x}{\sqrt{3}} \times v B and x=vtx=v t

E=23v2Bt

E∝t1E \propto t^1

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