A helicopter has metallic blades with a length pf `3 m` extending outward from a central hub and rotating at `2rev//s`. If the vertical component of the earht's magnetic field is `50 mu T`, then the emf induced between the blade tip and the centre hub is

A train is moving towards north with a speed of 25 m/s. if the vertical component of the earth's magnetic field is 0.2 xx 10^(-4) T, the emf induced in the axle 1.5 m long is

A train is moving towards north with a speed of 180 kilometre per hour. If the vertical component of the earth’s magnetic field is 0.2 xx 10^-4 T , the emf induced in the axle 1.5 m long is

In a ceiling fan, each blade rotates in a circle of radius 0.5 m. If the fan makes 2 rotation per second and the vertical component of the earth's magnetic field is 8xx 10^-5 T , calculate the emf induced between the inner and outer ends, of each blade.

A helicopter rises vertically upwards with a speed of 100 m//s . If the helicopter has a length of 10m and horizontal component of earth's magnetic field is 5 xx 10^(-3)Wb//m^(2) , then the induced emf between the tip of the nose and the tail of the helicopter is

A helicopter rises vertically upwards with a speed of 100 m//s . If the helicopter has a length of 10m and horizontal component of earth's magnetic field is 5 xx 10^(-3)Wb//m^(2) , then the induced emf between the tip of the nose and the tail of the helicopter is

A helicopter rises vertically upwards with a speed of 100 m//s . If the helicopter has a length of 10m and horizontal component of earth's magnetic field is 5 xx 10^(-3)Wb//m^(2) , then the induced emf between the tip of the nose and the tail of the helicopter is

A helicopter rise verticaly with a speed of 10ms^(-1) . If helicopter has a length of 10 m and the horizontal component of the earth's magentic field is 1.5 xx 10^(-3) Wbm^(2) , the emf induced between the tip of the nose and the tail of the helicopter, is

A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 rad s^(-1) . If the horizontal component of the earth's magnetic field is 0.2xx10^(-4) T , then e.m.f. developed between the two ends of the conductor is

A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 rad. s^(-1) . If the horizontal component of earth's magnetic field is 0.2 xx 10^(4) T, then the emf developed between the ends of the conductor is