List of top Physics Questions on Motional Electromotive Force asked in MHT CET

An aeroplane having a wing span of 30 m flies due north with the speed of 170 m/s. Magnetic field \(B = 3.6\times 10^{-5}\) T. The potential difference between the tips of the wings will be
A metal rod of length 'L' completes the circuit as shown. The area of the circuit is perpendicular to magnetic field 'B'. Total resistance of the circuit is 'R'. The force needed to move the rod in the direction as shown with constant speed 'V' is
A long rectangular conducting loop of width '\(l\)' mass '\(m\)' and resistance '\(R\)' is placed partly in a perpendicular magnetic field '\(B\)'. With what velocity should it be pushed downwards so that it may continue to fall without any acceleration? (\(g\) = acceleration due to gravity)
A wire of length \( L \) and resistance \( R \) is falling vertically through Earth's horizontal magnetic field \( B \). What is the current induced in the wire when it has fallen a height \( L \)? (Take acceleration due to gravity as \( g \))
A metal conductor of length $1\ \text{m}$ rotates vertically about one of its ends at an angular velocity of $5\ \text{rad/s}$. If the horizontal component of earth's magnetic field is $0.2 \times 10^{-4}\ \text{T}$, then the emf developed between the two ends of the conductor is
A straight conductor of length 0.6 m is moved with a speed of 10 $\text{ms}^{-1}$ perpendicular to a magnetic field of induction 1.2 $\text{Wb/m}^2$. The induced e.m.f. across the conductor is