A uniform magnetic field of 0.4 T acts perpendicular to a circular copper disc 20 cm in radius. The disc is having a uniform angular velocity of 10π rad s ⁻¹ about an axis through its centre and perpendicular to the disc. What is the potential difference developed between the axis of the disc and the rim ? (π = 3.14)

Electromagnetic Induction and Alternating Currents: JEE Main 2025 Physics question

JEE Main 2025 · 28 Jan, Evening shift · Q34

JEE Main 202528 Jan, Evening shiftPhysicsMediumElectromagnetic Induction and Alternating Currents149× since 2002

A uniform magnetic field of 0.4 T acts perpendicular to a circular copper disc 20 cm in radius. The disc is having a uniform angular velocity of

10\pi

rad s

^{-1}

about an axis through its centre and perpendicular to the disc. What is the potential difference developed between the axis of the disc and the rim ? (

\pi = 3.14

)

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JEE Main 2025 Electromagnetic Induction and Alternating Currents Question with Solution (28 Jan Evening shift, Q34) | JEE Arc