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List of top Physics Questions on Faradays laws of induction asked in MET
A vertical disc of diameter 10 cm makes 20 revolutions per second about a horizontal axis through its centre. A uniform magnetic field \(10^{-1}\) T acts perpendicular to the plane. If potential difference between centre and rim is \(\frac{\pi}{x} \times 10^{-p}\) Volt, find \(x/p\).
MET - 2023
MET
Physics
Faradays laws of induction
In a coil of resistance \(150\,\Omega\), a current is induced by changing the magnetic flux through it as shown by figure. The magnitude of flux through the coil is \( \_\_\_ \, \text{Wb} \).
MET - 2022
MET
Physics
Faradays laws of induction
A wire in the form of semi-circle of radius \( r \) rotates about its diameter with angular velocity \( \omega \) in a magnetic field \( B \). The axis of rotation is perpendicular to the field. The total resistance of the circuit is \( R \). If the mean power generated per period of rotation is \( \frac{(B\pi r^2 \omega)^2}{xR} \), then the value of \( x \) is
MET - 2022
MET
Physics
Faradays laws of induction
Two coils have mutual inductance of \(1.5\,H\). If current in primary coil is suddenly raised to \(5\,A\) in one millisecond, the induced emf in the secondary coil is:
MET - 2020
MET
Physics
Faradays laws of induction
A cylindrical conducting rod is kept along z-axis with magnetic field parallel to z-axis. Find induced current.
MET - 2014
MET
Physics
Faradays laws of induction
A train of 150 m length is going towards north direction at a speed of 10 m/s. A parrot flies at a speed of 5 m/s towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to
MET - 2013
MET
Physics
Faradays laws of induction
For a particle executing simple harmonic motion, the kinetic energy \(k\) is given by \(k = k_0 \cos^2 \omega t\). The maximum value of potential energy is
MET - 2013
MET
Physics
Faradays laws of induction
An earth satellite \(S\) has orbit radius which is 4 times that of communication satellite \(C\). The period of revolution of \(S\) will be
MET - 2013
MET
Physics
Faradays laws of induction
A coil having an area of \( 2 \, \text{m}^2 \) is placed in a magnetic field which changes from 1 Wb/m² to 4 Wb/m² in 2 seconds. The emf induced in the coil will be:
MET - 2011
MET
Physics
Faradays laws of induction
A 10 m long copper wire while remaining in the east-west horizontal direction is falling down with a speed of 5.0 m/s. If the horizontal component of the earthâs magnetic field \( B = 0.3 \times 10^{-4} \, \text{Wb/m}^2 \) the emf developed between the ends of the wires is:
MET - 2011
MET
Physics
Faradays laws of induction
A conducting wire is moving towards right in a magnetic field \( B \). The direction of induced current in the wire is shown in the figure. The direction of magnetic field will be:
MET - 2011
MET
Physics
Faradays laws of induction