List of top Physics Questions on Faradays laws of induction asked in COMEDK UGET

A metallic circular loop is placed with its plane perpendicular to a uniform magnetic field of $3\text{ T}$. If the radius of the loop decreases at a constant rate of $2\text{ mm s}^{-1}$, what will be the induced emf in the loop when the radius of the loop becomes $5\text{ cm}$?

A rectangular coil of 250 turns has an average area of \( 20 \, cm \times 15 \, cm \). The coil rotates with a speed of 60 cycles per second in a uniform magnetic field of \( 2 \times 10^{-2} \, T \) about an axis perpendicular to the field. The peak value of the induced emf is:

A current of 2 A is passed through the primary coil. The total flux linked with the secondary coil, which is closely wound over the primary is \( 2000 \times 10^{-6} \, \text{weber} \). What is the induced emf in the secondary if the current through the primary increases at a rate of \( 0.2 \, \text{A s}^{-1} \)?

A circular coil of area \( 2\sqrt{2} \, \text{cm}^2 \) and resistance \( 2\Omega \) is arranged vertically in the east-west direction. A uniform magnetic field \( 0.2 \, \text{T} \) is set up across the plane in the north to east direction. Now the magnetic field is removed at a steady rate in \( 0.4 \, \text{s} \). What is the current developed in the coil?