Questions in emi

Select	Question
	An electric potential difference will be induced between the ends of the conductor shown in the diagram, when the conductor moves in the direction
	Two rails of a railway track insulated from each other and the ground are connected to a milli voltmeter. What is the reading of voltmeter, when a train travels with a speed of 180 km/hr along the track. Given that the vertical component of earth's magnetic field is $0.2 \times {10^{ - 4}}weber/{m^2}$ and the rails are separated by 1 metre
	A conductor of 3 m in length is moving perpendicularly to magnetic field of ${10^{ - 3}}$ tesla with the speed of ${10^2}m/s$, then the e.m.f. produced across the ends of conductor will be
	When a wire loop is rotated in a magnetic field, the direction of induced e.m.f. changes once in each
	An aeroplane in which the distance between the tips of wings is 50 m is flying horizontally with a speed of 360 km/hr over a place where the vertical components of earth magnetic field is $2.0 \times {10^{ - 4}}weber/{m^2}$. The potential difference between the tips of wings would be
	A copper disc of radius 0.1 m is rotated about its centre with 10 revolutions per second in a uniform magnetic field of 0.1 Tesla with its plane perpendicular to the field. The e.m.f. induced across the radius of disc is
	A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth's magnetic field is $0.2 \times {10^{ - 4}}T$, then the e.m.f. developed between the two ends of the conductor is
	A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane of the loop exists everywhere. The current induced in the loop is
	A player with 3 m long iron rod runs towards east with a speed of 30 km/hr. Horizontal component of earth's magnetic field is $4 \times {10^{ - 5}}Wb/{m^2}$. If he is running with rod in horizontal and vertical positions, then the potential difference induced between the two ends of the rod in two cases will be
	A coil of area 80 square cm and 50 turns is rotating with 2000 revolutions per minute about an axis perpendicular to a magnetic field of 0.05 Tesla. The maximum value of the e.m.f. developed in it is

Previous 1 ... 6 7 8 9 10 ... 30 Next

View Selected Questions (0)

Back to Categories

Back to Home